Clinical trial Recruiting at 7 sites Phase 2 Interventional Ages 18 and up Women only

Tinzaparin treatment for women with advanced ovarian cancer receiving chemotherapy

Official title: The Effect of Tinzaparin on Biomarkers in FIGO Stage III-IV Ovarian Cancer Patients Undergoing Neoadjuvant Chemotherapy - A Randomized Pilot Study

Run by University Hospital, Linkoeping · NCT05284552 · Data updated 2026-11-12

This study is testing whether the blood thinner tinzaparin can help women with advanced ovarian cancer feel better while they are getting chemotherapy.

More Epithelial Ovarian Cancer trials

Quick facts

PhasePhase 2
Study typeInterventional
Ages18 Years and up
SexWomen only
Enrollment40 (estimated)
SponsorUniversity Hospital, Linkoeping
Academic / other
Drugs / interventionschemotherapy
Locations8 sites (Eksjö, Eksjö and 7 other locations)
StatusRecruiting
StartedJuly 12, 2022
Main results expectedDecember 2027
Study endsDecember 2027
Registry record updatedMay 11, 2026
Trial IDNCT05284552 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are women aged 18 and older with FIGO stage III-IV epithelial ovarian cancer selected for neoadjuvant chemotherapy.

Probably not a fit

Patients with signs of thromboembolic disease or those currently undergoing treatment for such conditions may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This pilot trial investigates the potential antitumoral effects of tinzaparin, an anticoagulant, in women with epithelial ovarian cancer (EOC) undergoing neoadjuvant chemotherapy. Participants will be randomly assigned to receive either tinzaparin or no treatment while receiving standard chemotherapy with carboplatin and paclitaxel. The study aims to evaluate changes in cancer biomarker CA-125 and assess various immunological and coagulation factors throughout the treatment process. Blood samples will be collected at multiple points to analyze the effects of tinzaparin on these parameters.

Why it matters

Potential benefit: If successful, this study could provide a novel treatment option that enhances the effectiveness of chemotherapy in advanced ovarian cancer patients.

How similar studies have gone: While previous studies have explored the antineoplastic effects of tinzaparin in animal models and cell lines, this approach in humans is novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* The subject has given written consent to participate in the study.
* Age 18 and above
* Epithelial ovarian, fallopian tube or peritoneal cancer, or abdominal cancer where a biopsy indicates an origin from the ovary, fallopian tube or peritoneum.
* Histology diagnosis of either high grade serous carcinoma, endometroid carcinoma or clear cell carcinoma.
* FIGO stage III-IV disease.
* Planned for platinum-based chemotherapy
* Prior to start of NACT pregnancy should be ruled out by menstrual history or in unclear cases by a urine hCG test.
* Women of childbearing potential should use a safe birth control method (combined hormonal contraception, progesterone only hormonal contraception, intra uterine device, bilateral tubal occlusion, vasectomized partner, sexual abstinence, male or female condom, diaphragm with spermicide).
* WHO Performance Status 0-2
* Weight 50-150 kg
* CA-125-level ≥250 kIE/L at diagnosis

Exclusion Criteria:

* Concomitant treatment with heparins, low molecular weight heparins, warfarin or non-vitamin K antagonist oral anticoagulants. Platelet inhibitors are allowed.
* Treatment with heparins, low molecular weight heparins or non-vitamin K antagonist oral anticoagulants within the last year.
* Known or suspected allergies against any product included in the study
* Ongoing pregnancy, independent of gestational age. Breastfeeding or planned pregnancy
* EOC disclosed at Cesarean section
* Abdominal surgery or other major surgery within the last year
* Mental inability, reluctance or language difficulties that result in difficulty understanding the meaning of study participation
* Treatment or disease which, according to the investigator, can affect treatment or study results
* Known brain metastasis
* Participation or recent participation (within the last 30 days) in a clinical study with an investigational product
* Ongoing treatment of thromboembolic disease.
* Thromboembolic disease within the last year.
* Hypersensitivity to the active substance (tinzaparin) or any of the excipients.
* Serious hemorrhage or conditions predisposing to serious hemorrhage. Serious hemorrhage is defined as fulfilling any one of these three criteria:

  1. occurs in a critical area or organ (e.g. intracranial, intraspinal, intraocular, retroperitoneal, intra-articular or pericardial, intra-uterine or intramuscular with compartment syndrome),
  2. causes a fall in hemoglobin level of 20 g/L (1.24 mmol/L) or more, or
  3. leads to transfusion of two or more units of whole blood or red blood cells.
* Severe coagulation disorder.
* Acute gastro duodenal ulcer.
* Septic endocarditis.
* Previous heparin-induced thrombocytopenia.
* WHO Performance Status \>2.
* E-GFR \<30ml/min (analyzed no more than 14 days before start of treatment with investigational product)
* Platelets \<100 x10\^9/L (analyzed no more than 14 days before start of treatment with investigational product)
* Treatment for other known malignancy within the last year (except basal cell carcinoma)

Where it's running

  • Department of Obstetrics and Gynecology, Highland Hospital
    Eksjö, Eksjö, Sweden
    Recruiting
  • Department of Oncology, Sahlgrenska University Hospital
    Gothenburg, Gothenburg, Sweden
    Recruiting
  • Department of Obstetrics and Gynecology, Ryhov County Hospital
    Jönköping, Jönköping County, Sweden
    Recruiting
  • Department of Oncology, Linköping University Hospital
    Linköping, Linköping, Sweden
    Recruiting
  • Department of Obstetrics and Gynaecology, Norrland University Hospital
    Umeå, Umeå, Sweden
    Recruiting
  • Department of Obstetrics and Gynecology, Värnamo Hospital
    Värnamo, Värnamo, Sweden
    Recruiting
Show 2 more locations
  • Department of Obstetrics and Gynecology, Västervik Hospital
    Västervik, Västervik, Sweden
    Recruiting
  • Department of Obstetrics and Gynecology, University Hospital
    Linköping, Östergötland County, Sweden
    Active not recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.