Oral treatment with LP-168 for patients with certain blood cancers

A Phase I, Multicenter, Open-Label, Dose-escalation Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Clinical Activity of Orally Administered LP-168 in Subjects With Relapsed or Refractory B-cell Malignancies.

This study is testing an oral treatment called LP-168 to see if it can help adults with certain types of blood cancers that have come back or didn't respond to other treatments.

Quick facts

• Phase: Phase 1
• Study type: Interventional
• Enrollment: 60 (estimated)
• Ages: 18 Years and up
• Sex: All
• Sponsor: Newave Pharmaceutical Inc (Industry-sponsored)
• Drugs / interventions: chemotherapy, immunotherapy, prednisone
• Locations: 4 sites (Durham, North Carolina and 3 other locations)
• Trial ID: NCT04775745 on ClinicalTrials.gov

What this trial studies

This phase I, multi-center, open-label, dose-escalation study evaluates the safety, tolerability, pharmacokinetics, and clinical activity of LP-168, a small molecule inhibitor, in adults with relapsed or refractory B-cell malignancies such as CLL, Waldenstrom Macroglobulinemia, and Diffuse Large B Cell Lymphoma. The study aims to determine the maximum tolerated dose (MTD) and the recommended Phase 2 dose (RP2D) of LP-168 administered orally. Secondary objectives include assessing the drug's preliminary efficacy in terms of progression-free survival and response rates. Once the MTD is established, additional subjects will be enrolled for further evaluation.

Who should consider this trial

Good fit: Ideal candidates include adults with relapsed or refractory B-cell malignancies who have undergone at least two prior systemic therapies.

Not a fit: Patients with early-stage B-cell malignancies or those who have not received prior treatments may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a new therapeutic option for patients with difficult-to-treat B-cell malignancies.

How similar studies have performed: Other studies involving small molecule inhibitors for B-cell malignancies have shown promise, indicating potential for success with this approach.

Eligibility criteria

Inclusion Criteria:

A subject will be eligible for study participation if he/she meets the following criteria:

* Subjects are eligible with B-cell malignancies, WM, FL, MCL, MZL, DLBCL, HCL, CLL, SLL, based upon 2016 updated WHO classification. Those subjects with WM, FL, MCL, DLBCL, or HCL must have received at least 2 prior systemic therapies.
* Low-grade B-cell lymphomas as follicular Grade 1, 2, or 3A, marginal zone or small lymphocytic lymphoma.
* Subject must have adequate coagulation, renal, and hepatic function, per local laboratory reference ranges at Screening as follows:

  * Activated partial thromboplastin time (APTT) and prothrombin time (PT) not to exceed 1.5 × ULN
  * Calculated creatinine clearance (CrCl) ≥ 60 mL/min using 24-hour CrCl OR Cockcroft-Gault formula.
  * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 1.5 ×ULN; Bilirubin ≤ 1.5 × ULN (except subjects with Gilbert's Syndrome, who may have a bilirubin \> 1.5 × ULN, per discussion between the Investigator and the Medical Monitor).
* Subjects must have adequate bone marrow independent of growth factor support per local laboratory reference range at screening as follows:

  * Absolute Neutrophil Count (ANC) ≥1000/uL;
  * An exception is for subjects with an ANC\<1000/uL and bone marrow heavily infiltrated with underlying disease (approximately 60% or more) may use growth factor to achieve the ANC eligibility criteria per discussion between the Investigator and the Medical Monitor.
  * Platelet count ≥ 50,000/µL - OR - Platelet count ≥ 20,000/ µL if thrombocytopenia is clearly due to CLL disease under study (per Investigator discretion)
  * Hemoglobin ≥8.0g/dL, and can be achieved by transfusion

Exclusion Criteria:

A subject will not be eligible for study participation if he/she meets any of the following criteria.

* Subject has received any of the following therapies within 14 days or 5 half-lives (whichever is shorter) prior to the first dose of study drug, or has not recovered to ≤ Grade 1 clinically significant adverse effect(s)/toxicity(s) of the previous therapy (other than alopecia):

  * Any anti-cancer therapy including chemotherapy, biologic or immunotherapy, radiotherapy, etc;
  * Any investigational therapy, including targeted small molecule agents.
  * For CLL subjects who come off BCR antagonists (BTK inhibitors, PI3K inhibitors, etc.) treatment, allow washout for 2 days as these subjects progress quickly after treatment discontinuation and then remain eligible (steroids may be given during these two days to allow disease control).
* Subjects who require immediate cytoreduction. However, subjects may receive up to two days of steroids for symptoms of impending organ impairment and remain eligible.
* Subject has received the following medications or therapies within 7 days prior to the first dose of study drug:

  * Steroid therapy (at dosages equivalent to prednisone \>20 mg/day) for anti-neoplastic intent (except as noted in exclusion criteria #3);
  * Cytochrome P450, family 3, subfamily A (CYP3A4) strong inhibitors and strong CYP2C8 inducers/inhibitors.
  * Potent CYP3A4 inducers such as rifampin, carbamazepine, phenytoin, and St. John's wort.
* Subjects require treatment with systemic acid-reducing agents including H-2-receptor antagonists and proton pump inhibitors with the following exceptions:

  * Proton pump inhibitors should be discontinued at least 7 days prior and held throughout the study
  * If concurrent use of an H2 blocking agent is necessary, it must be administered only between 2 and 3 hours after the dose of LP-168. If not taken during this time, the dose of H2 blocking agents should not be taken again until 2-3 hours after the next dose of LP-168.
  * If concurrent use of a local antacid is necessary, it must be administered 2 or more hours before and/or 2 or more hours after the dose of LP-168.
* Subject has significant screening electrocardiogram (ECG) abnormalities including. 2nd degree AV block type II 3rd degree block, Grade 2 or higher bradycardia, and corrected QT interval (QTc) ≥ 480ms.
* Serum amylase \> 1.5 × ULN or serum lipase \> 1.5 × ULN.
* Subject has any history of Richter's transformation for Phase 1a portion of the trial.
* Subjects who have undergone autologous/allogeneic hematopoietic stem cell transplantation (HSCT) therapy within 90 days of the first dose of LP-168, or patients on immunosuppressive therapy post-HSCT at the time of Screening, or currently with clinically significant graft-versus-host disease (GVHD) as per treating physician (Patients in relapse after allogeneic transplantation must be off treatment with systemic immunosuppressive agents for at least 4 weeks. The use of topical steroids and/or up to 20 mg/day prednisone or equivalent systemic steroids for ongoing GVHD is permitted.
* Subject has a history of other active malignancies other than B-cell malignancies within the past 3 years prior to study entry, with the exception of:

  * Adequately treated in situ carcinoma of the cervix uteri;
  * Basal cell carcinoma of the skin or localized squamous cell carcinoma of the skin;
  * Previous malignancy confined and surgically resected (or treated with other modalities) with curative intent.
* Subject requires anticoagulation with Warfarin.

Where this trial is running

Durham, North Carolina and 3 other locations

• Duke Univerisity — Durham, North Carolina, United States (Recruiting)
• University of Cincinnati — Cincinnati, Ohio, United States (Recruiting)
• Ohio State University — Columbus, Ohio, United States (Recruiting)
• Huntsman Cancer Institute, University of Utah — Salt Lake City, Utah, United States (Recruiting)

Study contacts

• Study coordinator: Anna Chen, MD, PhD

Conditions CLL/SLL; Waldenstrom Macroglobulinemia; Follicular Lymphoma; Diffuse Large B Cell Lymphoma; Mantle Cell Lymphoma; Marginal Zone Lymphoma; Hairy Cell Leukemia