Drug or treatment
Trastuzumab clinical trials
As of November 12, 2026, Find a Trial lists 161 clinical trials of Trastuzumab that are recruiting, at sites in 52 countries (most in China (85), United States (44), South Korea (22)). 1 was first registered in the last 30 days. By phase: Phase 2 (73), Phase 3 (35), Phase 1/2 (11), Phase 1 (10). The most active sponsors are Fudan University (10), Daiichi Sankyo (7), National Cancer Institute (NCI) (6). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 161Clinical trials
- 1New in 30 days
- 52Countries
Newest trials
All recruiting trials (newest 150 of 161)
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Neoadjuvant trastuzumab, durvalumab, and FLOT for HER2-positive gastric or GEJ cancer
This study tests a pre-surgery treatment combining trastuzumab, durvalumab, and FLOT for patients with HER2-positive locally advanced gastric or gastroesophageal junction cancer to see how many achieve complete tumor disappearance.
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Neoadjuvant Pyrotinib-to-pertuzumab for HER2-positive early breast cancer
This trial tests whether a two-step neoadjuvant plan with Pyrotinib plus Trastuzumab and Docetaxel followed by Pertuzumab plus Trastuzumab and Docetaxel works better than four cycles of Pertuzumab plus Trastuzumab and Docetaxel in women with HER2-positive early- to locally advanced breast cancer.
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Trastuzumab Rezetecan and Gemcitabine before surgery for HER2-positive UTUC
This study tests whether giving trastuzumab deruxtecan with gemcitabine before and around surgery can improve outcomes for people with HER2-positive upper tract urothelial cancer.
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Foslorapitant with Palonosetron to Help Prevent Nausea and Vomiting from Trastuzumab Rezetecan
A single-arm study tests whether giving foslorapitant plus palonosetron can prevent chemotherapy-induced nausea and vomiting in adults receiving Trastuzumab Rezetecan.
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Auricular point stimulation with dexamethasone versus standard antiemetics for nausea from trastuzumab deruxtecan
This trial tests whether adding ear acupuncture-style stimulation to dexamethasone can prevent and reduce nausea and vomiting caused by trastuzumab deruxtecan in breast cancer patients, compared with the usual antiemetic regimen.
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Entinostat with Pyrotinib and Endocrine Therapy in HER2-positive, HR-positive Advanced Breast Cancer after Trastuzumab Failure
This study tests whether adding entinostat to pyrotinib and hormone therapy is safe and helps patients with advanced HR+/HER2+ breast cancer who progressed after trastuzumab.
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Trastuzumab Rezetecan with Adebrelimab and Lenvatinib for advanced HER2-positive/low-expression biliary tract cancer
This study tests a triple therapy to see if it helps people with advanced biliary tract cancer that is HER2-positive or has low HER2 expression after at least one prior treatment.
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Olaparib with Trastuzumab and Pertuzumab before surgery for older women with HER2-positive breast cancer
This trial tests whether adding olaparib to standard HER2-targeted therapy can help older women with newly diagnosed, operable HER2-positive breast cancer before surgery.
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Dendritic Cell Vaccine with HER2-targeted Therapy or Nivolumab for Breast Cancer with Leptomeningeal Metastasis
This trial tests a dendritic cell vaccine added to trastuzumab for Her2-positive disease or to nivolumab for Her2-negative disease to see if it can be given safely to people with breast cancer that has spread to the leptomeninges.
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GQ1005 versus T-DM1 in HER2-positive unresectable or metastatic breast cancer
This trial tests whether GQ1005 works as well as T-DM1 for adults with HER2-positive unresectable or metastatic breast cancer who have already had trastuzumab and taxane.
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First-line treatment with Trastuzumab Rezetecan, Adebrelimab, and Lenvatinib for advanced HER2-positive or HER2-low biliary tract cancer
This phase II trial tests whether a combination of Trastuzumab Rezetecan, Adebrelimab, and Lenvatinib can help people with advanced HER2-positive or HER2-low biliary tract cancer respond to treatment as a first line therapy.
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Brain metastases from breast cancer: see how trastuzumab deruxtecan in CSF relates to effect
This study tests whether levels of trastuzumab deruxtecan in cerebrospinal fluid relate to how well it works for adults with breast cancer that has spread to the brain.
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Trastuzumab Rezetecan Neoadjuvant Therapy for HER2-Positive Breast Cancer
This trial tests whether adding trastuzumab rezetecan after an initial THP treatment helps patients with HER2-positive breast cancer decide if they should switch therapies based on response.
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Trastuzumab Deruxtecan plus ivonescimab for HR+ HER2-low advanced breast cancer
This study tests whether combining Trastuzumab Deruxtecan with ivonescimab can help people with HR-positive, HER2-low metastatic breast cancer after prior CDK4/6 inhibitor therapy.
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Pyrotinib plus trastuzumab and chemotherapy for HER2-positive early breast cancer
This study tests a treatment combination of Pyrotinib, Trastuzumab and chemo given before surgery to see if it can improve responses in HER2-positive breast cancer patients who have not yet been treated.
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Combo therapy with selumetinib and trastuzumab deruxtecan for advanced pancreatic cancer
This phase 1/2 trial tests whether the combination of selumetinib and DS-8201a (trastuzumab deruxtecan) is safe and whether it can help people with unresectable or metastatic pancreatic ductal adenocarcinoma.
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Pyrotinib and Trastuzumab with Dalpiciclib vs with Docetaxel in advanced HER2-positive breast cancer
This study tests whether an oral regimen of pyrotinib + subcutaneous trastuzumab + dalpiciclib works as well as the standard IV regimen with docetaxel in people with advanced HER2-positive breast cancer who have limited prior treatment.
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Tucatinib with trastuzumab and capecitabine for HER2‑positive metastatic breast cancer in routine care
This project will see if tucatinib combined with trastuzumab and capecitabine works and is safe for people with HER2‑positive metastatic breast cancer who have had at least two prior anti‑HER2 treatments.
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Paclitaxel micelles with HER2-targeted therapy vs standard taxane-based therapy as first-line treatment for advanced HER2-positive breast cancer
This study tests whether paclitaxel polymer micelles plus trastuzumab, pertuzumab, and ad Adelumab can better treat advanced HER2-positive breast cancer compared with the usual taxane-based therapy plus trastuzumab and pertuzumab.
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Megestrol Acetate to Help Fatigue in T-DXd-Treated Breast Cancer
This study tests whether adding Megestrol Acetate at the start of Trastuzumab Deruxtecan therapy can reduce fatigue and improve quality of life for adults with advanced HER2-positive breast cancer.
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Ear acupressure plus dexamethasone to prevent nausea and vomiting from trastuzumab deruxtecan
This trial will try ear acupressure combined with a standard dose of dexamethasone to prevent or reduce nausea and vomiting in breast cancer patients receiving trastuzumab deruxtecan.
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BL-M07D1 plus pertuzumab vs standard therapy in first-line HER2-positive breast cancer
A Phase 3 trial tests whether adding BL-M07D1 to pertuzumab is as good as or better than docetaxel plus trastuzumab and pertuzumab in patients with newly diagnosed, unresectable or metastatic HER2-positive breast cancer.
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Trastuzumab plus serplulimab with chemotherapy for HER2-positive advanced biliary tract or urothelial cancer after prior therapy
This study will test whether adding trastuzumab and serplulimab to chemotherapy helps people with HER2-positive unresectable or metastatic biliary tract cancer or urothelial carcinoma who have not responded to standard treatment.
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Trastuzumab Rezetecan versus Trastuzumab Deruxtecan for unresectable HER2‑low, HR‑positive breast cancer
This Phase 2 trial tests different doses of Trastuzumab Rezetecan compared with Trastuzumab Deruxtecan in women with HR-positive, HER2-low unresectable locally recurrent or metastatic breast cancer to see which dose is safer and more effective.
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KN026 plus HB1801 with chemotherapy as adjuvant treatment after surgery for resectable HER2-positive breast cancer
This study will test whether giving KN026 and HB1801 with chemotherapy after surgery helps people with resectable HER2-positive breast cancer more than the usual trastuzumab plus pertuzumab with chemotherapy.
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Whole-body HER2 PET/CT to see how 89Zr-trastuzumab accumulates in HER2-positive or HER2-mutated advanced NSCLC
This study tests whether 89Zr-trastuzumab PET/CT can show how much tracer builds up in tumors of adults with HER2-positive or HER2-mutated advanced NSCLC.
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Heart health education with VR for breast cancer patients on certain therapies
This trial tests a virtual reality program to help breast cancer survivors learn about heart health and healthy behaviors while they receive treatments like anthracyclines or trastuzumab.
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RO7771950 versus tucatinib with trastuzumab and capecitabine for HER2-positive locally advanced or metastatic breast cancer
This test will see if RO7771950 combined with trastuzumab and capecitabine works better than tucatinib combined with the same drugs for people with HER2-positive locally advanced or metastatic breast cancer.
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First-line trastuzumab-deruxtecan with capecitabine and bevacizumab for HER2-positive metastatic colorectal cancer
This trial tests whether giving trastuzumab-deruxtecan together with capecitabine and bevacizumab as first treatment helps people with HER2-positive metastatic or unresectable colorectal cancer shrink tumors and respond better.
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Pre-surgery trastuzumab deruxtecan (SHR-A1811) plus pertuzumab for HER2-positive breast cancer
This trial tests giving trastuzumab deruxtecan (SHR-A1811) with pertuzumab before surgery to see if it helps women with stage II–III HER2-positive breast cancer achieve a complete response.
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Neoadjuvant trastuzumab rezetecan plus toripalimab for HR‑positive, HER2‑low breast cancer
This trial will test whether giving trastuzumab rezetecan with toripalimab before surgery helps people with HR‑positive/HER2‑low breast cancer shrink tumors and achieve complete responses.
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IBI354 with or without pertuzumab versus taxane plus trastuzumab and pertuzumab for HER2-positive metastatic breast cancer
This trial tests whether IBI354, with or without pertuzumab, works better than standard taxane plus trastuzumab and pertuzumab as first-line treatment for adults with HER2-positive unresectable locally advanced or metastatic breast cancer.
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Trastuzumab-rezetecan for HER2-positive and HER2-low breast cancer
This project will test Trastuzumab-rezetecan in adults with HER2-positive or HER2-low breast cancer who are receiving it as part of routine care to see if it works and is safe.
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Intensified HER2-targeted treatment for people with a suboptimal response to initial dual HER2 therapy and chemotherapy
This trial will try stronger targeted drug combinations for people with HER2-positive early breast cancer who don't respond well to initial dual HER2-targeted therapy plus chemotherapy.
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Trastuzumab deruxtecan versus standard treatment for ovarian cancer that returned after PARP inhibitor therapy
This study will test whether trastuzumab deruxtecan helps people with HER2-expressing recurrent ovarian, fallopian tube, or peritoneal cancer that progressed on prior PARP inhibitor therapy compared with standard chemotherapy or bevacizumab.
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Using blood ctDNA to compare two pre-surgery HER2-positive breast cancer regimens
We will test whether two different pre-surgery drug combinations clear tumor DNA from the blood better in people with HER2-positive early breast cancer.
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Fruquintinib with trastuzumab and XELOX for first-line treatment of HER2‑positive advanced stomach or GEJ cancer
This trial will try fruquintinib together with trastuzumab and XELOX to see if it helps people with HER2‑positive advanced stomach or gastroesophageal junction cancer as their first treatment.
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Disitamab vedotin plus trastuzumab and tislelizumab versus chemotherapy plus trastuzumab (± pembrolizumab) for HER2‑high advanced gastric or gastroesophageal junction adenocarcinoma
This trial tests whether combining disitamab vedotin with trastuzumab and the immunotherapy tislelizumab works better than standard chemotherapy with trastuzumab (with or without pembrolizumab) as first‑line treatment for people with HER2‑high advanced gastric or gastroesophageal junction cancer.
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Trastuzumab rezetecan for HER2-positive advanced solid tumors resistant to standard treatments
This treatment gives trastuzumab rezetecan every three weeks to see if it helps adults with HER2-positive advanced solid tumors — including extramammary Paget's disease, rare tumors like urachal cancer, and urothelial carcinoma — that have stopped responding to standard treatments.
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Trastuzumab deruxtecan for Russian patients with HER2-positive unresectable or metastatic breast cancer
This study will see how well trastuzumab deruxtecan (T-DXd) works in Russian adults with unresectable or metastatic HER2-positive breast cancer who received at least one cycle.
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Intrathecal thiotepa plus trastuzumab for HER2‑positive breast cancer with leptomeningeal metastasis
Testing whether injecting thiotepa together with trastuzumab into the cerebrospinal fluid through an Ommaya reservoir helps people with HER2‑positive breast cancer that has spread to the leptomeninges.
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Trastuzumab Rezetecan with or without Adebrelimab for HER2-expressing advanced urothelial cancer
This study will test whether Trastuzumab Rezetecan alone or combined with the immunotherapy Adebrelimab helps people with HER2-expressing locally advanced or metastatic urothelial cancer.
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Nebivolol to protect the heart during trastuzumab treatment for HER2‑positive breast cancer
This study will test whether taking nebivolol 5 mg can prevent drops in heart function in adults with newly diagnosed early or locally advanced HER2‑positive breast cancer who are starting trastuzumab.
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Trastuzumab Rezetecan for HER2‑low metastatic breast cancer with visceral crisis
This Phase 2 trial tests Trastuzumab Rezetecan given every three weeks to see if it is safe and tolerable for adults with HER2‑low unresectable or metastatic breast cancer who are in visceral crisis.
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Elacestrant plus trastuzumab deruxtecan for HR-positive, HER2-low or HER2-ultralow metastatic breast cancer after CDK4/6 and endocrine therapy
This trial tests whether combining elacestrant with trastuzumab deruxtecan helps people with HR-positive, HER2-low or HER2-ultralow metastatic breast cancer that progressed after CDK4/6 inhibitor and endocrine treatment.
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Comparing blood levels of the free‑DXd payload from trastuzumab‑deruxtecan by BMI in people with advanced or metastatic breast cancer
This study will test whether body mass index changes blood levels of the free‑DXd payload in adults with locally advanced or metastatic HER2‑low or HER2‑positive breast cancer who are receiving trastuzumab‑deruxtecan.
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Tucatinib plus trastuzumab for HER3-mutant, HER2-not amplified metastatic breast cancer
This trial will test whether combining tucatinib and trastuzumab helps people with metastatic or unresectable breast cancer whose tumors are HER2-negative but carry activating ERBB3 (HER3) mutations.
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Trastuzumab deruxtecan for adults with advanced breast cancer
This trial tests trastuzumab deruxtecan in adults with advanced breast cancer to see if it is safe and works well.
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Subcutaneous trastuzumab‑pertuzumab before surgery for Algerian women with locally advanced HER2‑positive breast cancer
This research will test whether giving the combined subcutaneous medicine Phesgo before surgery helps Algerian women with non‑metastatic HER2‑positive breast cancer clear invasive tumor from the breast and nearby lymph nodes.
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T-DXd with or without Neratinib for HER2-positive breast cancer with brain metastases
This trial tests whether adding Neratinib to Trastuzumab Deruxtecan helps treat HER2-positive breast cancer that has spread to the brain.
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Bevacizumab added or not to T-DXd for HER2-low breast cancer with brain metastases
This trial tests whether adding bevacizumab to trastuzumab deruxtecan helps people with HER2-low breast cancer that has spread to the brain.
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Safety of combining pidnarulex (CX-5461) with trastuzumab deruxtecan for HER2-positive, HER2-low/ultralow breast and other HER2-expressing solid tumors
This trial tests whether adding pidnarulex to trastuzumab deruxtecan is safe and finds the best dose for adults with HER2-positive, HER2-low/ultralow, or other HER2-expressing advanced or metastatic breast and solid tumors.
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Trastuzumab and pertuzumab biosimilars with XELOX before surgery for HER2-positive rectal cancer
This tests whether adding trastuzumab and pertuzumab biosimilars to XELOX chemotherapy before surgery can increase the complete tumor response in adults with locally advanced HER2-positive rectal cancer.
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Trastuzumab rezetecan with or without radiotherapy for HER2‑positive advanced breast cancer that has spread to the brain.
This trial will test whether adding radiotherapy to trastuzumab rezetecan helps adults with HER2‑positive advanced breast cancer and untreated brain metastases control their brain tumors better than the drug alone.
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Neoadjuvant oral paclitaxel with subcutaneous pertuzumab and trastuzumab for HER2-positive breast cancer
This trial tests whether taking oral paclitaxel together with subcutaneous pertuzumab and trastuzumab before surgery helps people with HER2-positive breast cancer achieve a complete tumor response on pathology.
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Treatment options after targeted therapy stops working in advanced breast cancer
This study will see how well different treatments work for people with advanced breast cancer who have stopped responding to CDK4/6 inhibitors, PIK3CA inhibitors, or T-DXd.
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RC48 with bevacizumab or pyrotinib for HER2-positive metastatic breast cancer after T-Dxd failure
This trial will try RC48 together with either bevacizumab or pyrotinib in adults with HER2-positive metastatic breast cancer whose disease has progressed after trastuzumab deruxtecan (T-Dxd).
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Trastuzumab plus chemotherapy versus chemotherapy alone for first-line HER2-positive advanced biliary tract cancer
This trial will test if adding trastuzumab to standard first-line chemotherapy helps people with HER2-positive advanced or metastatic biliary tract cancer control their disease longer than chemotherapy alone.
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Toxicity markers for Trastuzumab‑Deruxtecan in advanced breast cancer
This project will test whether blood markers can predict serious side effects, including interstitial lung disease, in adults with metastatic HER2‑positive or HER2‑low breast cancer who are treated with Trastuzumab‑Deruxtecan.
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TQB2930 plus chemotherapy for HER2-positive advanced breast cancer
This study tests whether TQB2930 with chemotherapy works better than trastuzumab with chemotherapy for people with HER2-positive advanced breast cancer who have already had at least two anti-HER2 treatments.
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Trastuzumab rezetecan followed by CDK4/6 inhibitor plus hormone therapy for HR+/HER2‑low/ultra‑low advanced breast cancer
This trial will test whether starting with trastuzumab rezetecan and then switching to a CDK4/6 inhibitor plus endocrine therapy helps women with HR-positive, HER2-low or ultra-low advanced breast cancer live longer without disease progression.
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Trastuzumab deruxtecan versus standard chemotherapy for HER2-expressing (IHC 3+/2+) endometrial cancer
This trial tests trastuzumab deruxtecan versus standard chemotherapy after surgery for adults with newly diagnosed HER2-expressing (IHC 3+/2+) endometrial cancer.
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Combining sotorasib and trastuzumab deruxtecan for advanced KRAS G12C non-small cell lung cancer
This trial tests whether giving sotorasib with trastuzumab deruxtecan is safe and can shrink tumors or slow progression in people with locally advanced or metastatic non-small cell lung cancer that has a KRAS G12C mutation and progressed after prior targeted therapy, immunotherapy, and chemotherapy.
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TQB2102 injection versus trastuzumab emtansine for HER2-positive advanced breast cancer
This trial tests whether TQB2102 injection works as well as trastuzumab emtansine for adults with HER2-positive unresectable or metastatic breast cancer.
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Evorpacept plus trastuzumab and chemotherapy for metastatic HER2‑positive breast cancer after trastuzumab‑deruxtecan
This trial will test whether adding evorpacept to trastuzumab and chemotherapy helps people with metastatic HER2‑positive breast cancer whose disease progressed after trastuzumab‑deruxtecan.
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TQB2102 versus docetaxel with trastuzumab and pertuzumab for HER2-positive recurrent or metastatic breast cancer
This trial will test whether TQB2102 works as well as docetaxel plus trastuzumab and pertuzumab for adults with HER2-positive recurrent or metastatic breast cancer.
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Oral capecitabine plus trastuzumab versus paclitaxel plus trastuzumab for small HER2‑positive, node‑negative breast cancers as adjuvant treatment.
This trial tests whether giving oral capecitabine with trastuzumab instead of paclitaxel with trastuzumab can prevent recurrence in women with small (≤2 cm), HER2‑positive, node‑negative breast cancer.
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New treatment options for advanced endometrial cancer
This study is testing a new combination of treatments for advanced endometrial cancer to see if it can help patients live longer without their cancer getting worse compared to standard chemotherapy.
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Vaccine targeting HER2 in locally advanced breast cancer
This trial will test a vaccine that boosts the immune system to attack HER2-positive breast cancer in adults with locally advanced or high-risk disease.
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Using Trastuzumab Emtansine after Trastuzumab Deruxtecan for HER2-Positive Breast Cancer
This study is testing if giving trastuzumab emtansine right after trastuzumab deruxtecan helps people with advanced HER2-positive breast cancer who haven't responded to the first treatment.
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Trastuzumab deruxtecan plus pembrolizumab versus platinum chemotherapy plus pembrolizumab for first-line HER2‑overexpressing non‑squamous NSCLC
This trial will test whether combining trastuzumab deruxtecan with pembrolizumab works better than standard platinum‑based chemotherapy plus pembrolizumab as first treatment for adults with HER2‑overexpressing, PD‑L1 low (<50%) advanced non‑squamous NSCLC.
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6 months versus 12 months of HER2-targeted therapy after a complete response to preoperative chemo for early HER2+ breast cancer
This tests whether 6 months of HER2-targeted therapy works as well as 12 months for people with early HER2+ breast cancer who had a pathologic complete response after preoperative chemotherapy with trastuzumab.
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Evaluating the effectiveness and safety of Trastuzumab Deruxtecan in advanced HER2-positive gastric cancer in China
This study is testing how well Trastuzumab Deruxtecan works and how safe it is for people in China with advanced HER2-positive stomach cancer who are already receiving this treatment.
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Comparing JSKN003 and T-DM1 for advanced HER2-positive breast cancer
This study is testing whether a new treatment called JSKN003 can work better than the standard drug T-DM1 for people with advanced HER2-positive breast cancer who have already received other treatments.
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Comparing Trastuzumab Deruxtecan and Endocrine Therapy for Low-HER2 Advanced Breast Cancer
This study is testing whether a new drug called trastuzumab deruxtecan can help people with low HER2 advanced breast cancer feel better compared to standard hormone treatments they’ve already tried.
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HLX22 plus trastuzumab deruxtecan for HER2-low, hormone receptor–positive advanced breast cancer
This will test whether adding HLX22 to trastuzumab deruxtecan helps people with HER2-low, hormone receptor–positive advanced breast cancer who have progressed on or could not tolerate standard treatments.
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Effectiveness and safety of T-DXd in Chinese patients with HER2 mutation-positive lung cancer
This study is testing how well and safely a drug called T-DXd works for Chinese patients with advanced lung cancer that has HER2 mutations.
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Evaluating Pyrotinib for HER2-positive Advanced Breast Cancer
This study is testing if a new drug called Pyrotinib, given with standard chemotherapy, can help people with advanced HER2-positive breast cancer feel better and improve their treatment outcomes.
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Collecting real-world data on trastuzumab-deruxtecan for advanced gastric cancer
This study is collecting real-world information from patients with advanced gastric cancer who are being treated with trastuzumab-deruxtecan to see how well the treatment works and how it affects their lives.
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New treatment for HER2-positive gastric cancer using rilvegostomig and chemotherapy
This study is testing a new treatment combining rilvegostomig with chemotherapy for people with HER2-positive gastric cancer to see if it works better than current standard treatments.
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Using pyrotinib and trastuzumab for maintenance therapy in HER2-positive breast cancer
This study is testing if using the drugs pyrotinib and trastuzumab together can help people with advanced HER2-positive breast cancer stay healthier and prevent brain tumors after their initial treatment.
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Testing a new drug for patients with metastatic HER2-negative breast cancer
This study is testing a new drug called T-DXd to see if it can help adults with metastatic HER2-negative breast cancer feel better and improve their treatment outcomes.
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Imaging HER2-low breast cancers using a specialized PET scan
This study is testing a new type of PET scan that uses a special version of a breast cancer drug to see if it can better find HER2-low breast cancers that might have been missed before.
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Combination treatment for advanced HER2-positive gastric cancer
This study is testing a new combination treatment for adults with advanced HER2-positive gastric cancer to see if it works better than the standard treatment.
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Combination treatment for advanced HER2-positive gastric cancer
This study is testing a new combination of treatments for people with advanced HER2-positive gastric cancer to see if it works better than the standard chemotherapy options.
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Observational study of trastuzumab deruxtecan for patients with HER2-low breast cancer
This study is looking at how well trastuzumab deruxtecan works for people with HER2-low breast cancer that can't be removed by surgery or has spread, focusing on real-world experiences in Bulgaria and Slovenia.
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Neoadjuvant therapy for low-risk HER2-positive breast cancer patients
This study is testing a new treatment plan for people with low-risk HER2-positive breast cancer to see if combining certain chemotherapy drugs with targeted therapy can work just as well with less intense treatment.
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Detecting Tumor DNA in Blood to Find T-DXd Candidates in HR+/HER2-Low Metastatic Breast Cancer
We test whether persistent tumor DNA in blood after starting standard therapy can identify HR+ HER2-low metastatic breast cancer patients who may benefit from trastuzumab deruxtecan.
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Genomic and transcriptomic markers predicting response to sacituzumab govitecan after trastuzumab deruxtecan in ER+/HER2-low metastatic breast cancer
This trial will test whether DNA and RNA features from a fresh tumor biopsy can predict who responds to sacituzumab govitecan in people with ER-positive, HER2-low metastatic breast cancer who progressed after trastuzumab deruxtecan.
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Comparing Trastuzumab-Deruxtecan to standard therapy for early breast cancer patients with molecular relapse
This study is testing if a new treatment called Trastuzumab-Deruxtecan can help early breast cancer patients with a relapse feel better compared to standard therapy options.
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TL938 plus trastuzumab for HER2-positive metastatic colorectal cancer
This Phase 2 test checks whether combining oral TL938 with trastuzumab helps adults with HER2-positive, RAS wild-type metastatic or unresectable colorectal cancer that has progressed after standard chemotherapy.
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Combination therapy of Disitamab Vedotin and Trastuzumab for HER2 positive gastric cancer
This study is testing a new combination of two drugs, Disitamab Vedotin and Trastuzumab, to see if it can help people with advanced HER2 positive gastric cancer who haven't responded to other treatments.
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Evaluating trastuzumab deruxtecan in metastatic breast cancer with varying HER2 levels
This study is testing how different levels of HER2 in metastatic breast cancer affect how well the drug trastuzumab deruxtecan works for patients.
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Treatment for HER2-negative metastatic breast cancer using two investigational drugs
This study is testing if using two new drugs one after the other can help people with HER2-negative metastatic breast cancer live longer and feel better.
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Treatment for HER2-positive gastric and gastroesophageal junction cancer
This study is testing a new treatment combining HLX22, trastuzumab, and chemotherapy to see if it helps people with advanced HER2-positive stomach cancer feel better compared to standard treatment.
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Trastuzumab deruxtecan versus CDK4/6 inhibitor plus hormone therapy as first-line treatment for HR-positive, HER2-low non-luminal advanced breast cancer.
This trial will see if trastuzumab deruxtecan (T-DXd) works better than a CDK4/6 inhibitor plus endocrine (hormone) therapy as first-line treatment for adults with HR-positive, HER2-low advanced breast cancer that is classified as non-luminal by gene profiling.
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Comparing zanidatamab and trastuzumab for metastatic HER2-positive breast cancer treatment
This study is testing whether a new treatment called zanidatamab, used with chemotherapy, works better than the standard treatment trastuzumab with chemotherapy for people with advanced HER2-positive breast cancer who haven't responded well to previous therapies.
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Combining two anticancer drugs for treating advanced gastric and gastroesophageal junction cancers
This study is testing a new combination of two cancer drugs to see if they can help people with advanced HER2-positive gastric or gastroesophageal junction cancers feel better and live longer.
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Monitoring heart health in breast cancer patients receiving trastuzumab
This study is testing if measuring a specific blood marker can help track heart health in breast cancer patients getting trastuzumab treatment, to see if it can replace traditional heart scans.
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Combining Anlotinib and Trastuzumab Deruxtecan for Advanced HER2-Low Breast Cancer
This study is testing if combining two drugs, anlotinib and trastuzumab deruxtecan, can help people with advanced HER2-low breast cancer who have already had one round of chemotherapy.
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Understanding how trastuzumab deruxtecan works in HER2 positive breast cancer
This study is trying to understand why some people with HER2 positive breast cancer don’t respond to the treatment trastuzumab deruxtecan, to help improve future treatment options.
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Treatment of advanced breast cancer with Hemay022 and AI
This study is testing if a new treatment called Hemay022, combined with hormone therapy, can help people with advanced breast cancer live longer without their cancer getting worse compared to a standard treatment.
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Comparing DP303c and trastuzumab emtansine for advanced HER2-positive breast cancer
This study is testing a new injection called DP303c to see if it works better than trastuzumab emtansine for people with advanced HER2-positive breast cancer.
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Combining Darsilide with Trastuzumab and Patuzumab for Breast Cancer Treatment
This study is testing if a new treatment combining Darsilide with two other drugs can help women with early or locally advanced HER2-positive breast cancer before they have surgery.
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Treatment for HER2-positive gastric cancer after surgery
This study is testing if a new combination treatment can help people with HER2-positive gastric cancer feel better after their surgery if they still have some cancer left.
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Investigating the impact of HER2 receptor signaling on brown fat activity in breast cancer patients
This study is testing how the HER2 receptor affects brown fat activity in breast cancer patients to see if it plays a role in weight management after treatment.
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Using Shengmai San to Prevent Heart Issues from Breast Cancer Treatment
This study is testing whether a traditional Chinese medicine called Shengmai San can help prevent heart problems in people with HER2 positive breast cancer who are receiving certain chemotherapy treatments.
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Neoadjuvant treatment for HER2-positive breast cancer without chemotherapy
This study is testing a new treatment using tucatinib, trastuzumab, and pertuzumab for people with stage II-III HER2-positive breast cancer to see if they can be treated without chemotherapy.
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Combining pembrolizumab, trastuzumab, and chemotherapy for HER2+ esophagogastric cancer
This study is testing if adding pembrolizumab and trastuzumab to standard chemotherapy can help people with resectable HER2+ esophagogastric cancer do better in their treatment.
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Combination of Trastuzumab Deruxtecan and Afatinib for HER2-low Advanced Gastric Cancer
This study is testing a new combination of two drugs, Trastuzumab Deruxtecan and Afatinib, to see if it can help people with HER2-low advanced gastric cancer who don’t have many treatment choices.
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Using Trastuzumab Deruxtecan to treat brain cancer
This study is testing if a new drug called trastuzumab deruxtecan can effectively treat brain cancer in adults with specific types of tumors that have the HER2 protein.
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Combination therapy for HER2-positive breast cancer
This study is testing a new combination of treatments for women with HER2-positive breast cancer to see if it helps them respond better to therapy before surgery.
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Tucatinib combined with radiation for HER2-positive breast cancer with leptomeningeal disease
This study is testing if combining radiation with a new treatment for HER2-positive breast cancer can help patients with brain involvement live longer and feel better.
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Neoadjuvant treatment for ER+/HER2+ breast cancer using a combination of drugs
This study is testing a new combination of drugs to see if it helps women with early or locally advanced HER2-positive breast cancer shrink their tumors before surgery.
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Treatment for HER2-positive breast cancer with limited metastases
This study tests if a new treatment can help people with HER2-positive breast cancer that has spread to a few other places in the body and aims to improve their chances of recovery.
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Using targeted therapy for HER2 positive gastrooesophageal cancer after surgery
This study is testing if a new targeted therapy called trastuzumab deruxtecan can help patients with HER2 positive gastrooesophageal cancer who still have traces of cancer after surgery and chemotherapy.
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Combination treatment for metastatic HER2-positive breast cancer
This study is testing a new combination of medications for people with HER2-positive metastatic breast cancer who haven't responded to previous treatments, to see if it can help them feel better and manage their disease.
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Evaluating trastuzumab deruxtecan for patients with low HER2 metastatic breast cancer
This study is testing a new drug called trastuzumab deruxtecan to see if it can help people with low HER2 metastatic breast cancer live longer before needing a different treatment.
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Observational study on HER2-low breast cancer treatment with Trastuzumab Deruxtecan
This study is testing how well Trastuzumab deruxtecan works for adults with advanced HER2-low breast cancer who have already had chemotherapy.
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Comparing trastuzumab deruxtecan to standard treatment for HER2-positive breast cancer
This study is testing if a new drug called trastuzumab deruxtecan can work better than standard treatment for people with early-stage HER2-positive breast cancer before surgery.
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Short-course treatment for early HER2-positive breast cancer
This study is testing a shorter treatment plan with two medications for early HER2-positive breast cancer to see if it works just as well as the usual year-long treatment but with fewer side effects.
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New treatment for HER2-positive recurrent or metastatic breast cancer
This study is testing a new combination treatment for people with HER2-positive recurrent or metastatic breast cancer to see if it works better than the standard treatment.
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Evaluating GI-102 for advanced solid tumors with or without other cancer drugs
This study is testing a new cancer treatment called GI-102, both on its own and with other cancer drugs, to see how safe it is and how well it works for people with advanced solid tumors.
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Treatment for breast cancer patients with leptomeningeal disease
This study is testing a new treatment combining tucatinib, capecitabine, and intrathecal trastuzumab to see if it can help people with HER2-positive metastatic breast cancer and leptomeningeal disease live longer.
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Testing a new drug combination for HER2-positive inflammatory breast cancer
This study is testing a new combination of two drugs to see if they can safely and effectively treat people with stage III HER2-positive inflammatory breast cancer who haven't had treatment before.
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Combination of trastuzumab and pertuzumab for treating cancers with HER2 mutations
This study is testing if a combination of two cancer drugs, trastuzumab and pertuzumab, can help adults and young people with cancers that have HER2 mutations or amplifications.
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Treatment for hormone receptor positive HER2 positive breast cancer after neoadjuvant therapy
This study is testing if combining two drugs, trastuzumab and nelatinib, can help people with hormone receptor positive HER2 positive breast cancer who still have cancer after initial treatment feel better compared to the usual combination of trastuzumab and pertuzumab.
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Combination therapy for advanced HER2-positive biliary tract cancer
This study is testing a new combination treatment for people with advanced HER2-positive biliary tract cancer to see if it can help them live longer and feel better.
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Neoadjuvant therapy for HER2-positive early breast cancer
This study is testing if a new drug called trastuzumab-deruxtecan can work better than standard chemotherapy for people with early HER2-positive breast cancer to see if it helps them respond better to treatment.
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Combination treatment for HER2-positive metastatic solid tumors with brain metastases
This study is testing if a combination of two drugs can help people with HER2-positive metastatic solid tumors that have spread to the brain feel better and live longer.
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Combining Tucatinib and Trastuzumab for HER2 Positive Rectal Cancer
This study is testing if combining two cancer drugs, tucatinib and trastuzumab, with standard chemotherapy can help people with HER2 positive rectal cancer have better treatment results.
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Combination therapy for advanced HER2-positive gastric cancer
This study is testing a new combination of three drugs to see if it can help people with advanced HER2-positive gastric cancer who didn’t get better with their first treatment.
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Combination treatment for HR+/HER2+ breast cancer
This study is testing a new combination treatment for patients with stage II-III HR+/HER2+ breast cancer to see if it works better than the standard treatment before surgery.
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Observing patient outcomes in breast cancer patients treated with trastuzumab deruxtecan
This study is looking to see how well trastuzumab deruxtecan works for people with certain types of advanced breast cancer and how they feel about their treatment.
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Combining Eribulin and a Trastuzumab-biosimilar for Advanced HER2-positive Breast Cancer
This study is testing if combining two cancer drugs, eribulin and a trastuzumab-biosimilar, can help people with advanced HER2-positive breast cancer who have already tried other treatments.
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Comparing treatments for advanced HER2-positive salivary gland cancer
This study is testing if a new drug called T-DM1 works better than the usual treatment for people with advanced HER2-positive salivary gland cancer, while also looking at another drug for those with lower levels of HER2.
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Imaging HER2+ Breast Cancer with Brain Metastasis using a New Scan
This study is testing a new type of scan to see if it can help doctors better understand how well a treatment works for people with HER2+ breast cancer that has spread to the brain.
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Testing a combination of two anti-cancer drugs for HER2-positive solid tumors
This study is testing a combination of two cancer drugs to see if they can safely help people with advanced HER2-positive solid tumors.
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HER2-targeted vaccine combined with standard chemotherapy for breast cancer
This study is testing if adding a new vaccine to standard chemotherapy can help people with HER2-positive breast cancer have better treatment results.
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Neoadjuvant therapy with or without Inavolisib for early HER2-positive breast cancer
This study is testing if adding a new drug called Inavolisib to standard treatment can help women with early HER2-positive breast cancer respond better before surgery.
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Comparing targeted therapies for HER2 positive early breast cancer after surgery
This study is testing whether a new combination of treatments can help women with HER2 positive early breast cancer do better after surgery compared to sticking with their original therapy.
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Combination treatment for HER2 positive metastatic colorectal cancer
This study is testing a new combination of tucatinib, trastuzumab, and mFOLFOX6 to see if it helps people with HER2 positive metastatic colorectal cancer more than the usual treatments.
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Evaluating GLSI-100 immunotherapy for HER2 positive breast cancer
This study is testing a new immunotherapy called GLSI-100 to see if it can help prevent breast cancer from coming back in patients who are at high risk and have HER2 positive breast cancer.
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Combination treatment for stage II-III triple-positive breast cancer
This study is testing a new combination treatment for women with stage II-III triple-positive breast cancer to see if it helps shrink tumors before surgery.
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Using trastuzumab and pertuzumab to improve survival in HER2+ esophageal cancer
This study is testing if adding two targeted therapies, trastuzumab and pertuzumab, to standard treatment can help people with HER2-positive esophageal cancer live longer.
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CA-4948 combined with chemotherapy and immunotherapy for advanced gastric and esophageal cancer
This study is testing a new treatment combining CA-4948 with chemotherapy and immunotherapy to see if it helps people with advanced stomach and esophageal cancer who haven't had other treatments yet.
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Comparing two treatment regimens for HER-2 positive breast cancer
This study is testing two different treatment plans for people with HER-2 positive breast cancer to see which one works better before surgery.
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Treatment adjustment for HER2 positive breast cancer after initial therapy
This study is testing if adjusting treatment for early HER2 positive breast cancer based on blood tests can help patients do better after their initial therapy.
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Combining Pyrotinib and ARX788 for treating HER2-positive breast cancer
This study is testing a new combination of two drugs, pyrotinib and ARX788, to see if it can help women with stage II-III HER2-positive breast cancer who haven't responded well to other treatments.
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Comparing two treatments for early-stage HER2-positive breast cancer after surgery
This study is testing whether a new treatment combining T-DM1 and trastuzumab can help people with early-stage HER2-positive breast cancer feel better and live longer after surgery compared to a standard treatment.
Showing recruiting studies first, then the newest. Describe your situation to find the ones that fit you.
Quick answers
How many clinical trials of Trastuzumab are recruiting right now?
161, as of November 12, 2026. 1 of them was first registered in the last 30 days. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 52 countries. The most sites are in China (85 trials), United States (44 trials), South Korea (22 trials), Italy (20 trials), France (19 trials). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 2: 73, Phase 3: 35, Phase 1/2: 11, Phase 1: 10. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.