New injection aims to curb bleeding in rare clotting disorder
NCT ID NCT07711158
First seen Jul 17, 2026 · Last updated Jul 17, 2026
Summary
This phase II trial tests an injected drug called SR604 in people with congenital Factor VII deficiency, a rare bleeding disorder. The goal is to see if SR604 can reduce the number of bleeding episodes and improve safety. The study includes 12 participants aged 12 to 65 who have had at least two treated bleeds in the past three months.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- SR604 injection
- What this could lead to
- If successful, SR604 could offer a new way to prevent bleeding episodes in people with Factor VII deficiency, reducing the need for frequent infusions.
- What could go wrong
- This is a small, early-phase trial with only 12 participants, so results may not apply to everyone. The drug may not effectively reduce bleeding or could cause unexpected side effects.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Phase 2
Tests whether the treatment actually works, and watches for side effects, in a larger group.
- Participants
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About 12 people
The number the study aims to enrol. It can still change while the study runs.
- Expected to start
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Jul 2026
An estimate. Start dates often move.
- Expected to finish
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Dec 2027
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 to 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Age ≥12 years and ≤65 years at the time of signing the informed consent form; both genders eligible; 2. Clinically diagnosed with congenital coagulation Factor VII deficiency, with historical or screening FVII activity \<10%, and ≥2 treated new-onset bleeding events within 3 months prior to enrollment; 3. No active bleeding symptoms prior to first administration of SR604 Injection; 4. The subject and/or legal representative and impartial witness have signed the informed consent form, indicating voluntary agreement to participate in this trial, to provide biological samples for testing as required by the protocol, and to comply with the planned study visits; 5. Female subjects (post-menarche) must have a negative serum pregnancy test (HCG) during the screening period; subjects with childbearing potential (females post-menarche or males post-spermarche) must agree to use highly effective contraceptive measures throughout the study period. Exclusion Criteria: 1. Known history of hypersensitivity to the study drug formulation or any of its components; 2. Intolerance to subcutaneous injection or other local skin abnormalities or dermatoses that may affect drug administration or safety assessment; 3. Meeting any one of the following criteria during screening: 1. Hemoglobin \<60 g/L; 2. Platelet count \<100×10⁹/L; 3. Abnormal hepatic or renal function: alanine aminotransferase (ALT) or aspartate aminotransferase (AST) ≥2.5× upper limit of normal (ULN), or total bilirubin ≥1.5× ULN; or serum creatinine (Cr) ≥1.5× ULN; 4. Positive for anti-human immunodeficiency virus (HIV) antibodies. 4. Any bleeding disorder other than congenital Factor VII deficiency, or other conditions causing significantly abnormal coagulation parameters (e.g., hemophilia A or B, von Willebrand disease, platelet disorders, vitamin K deficiency, etc.); 5. Protein C deficiency or Protein S deficiency; 6. History of thrombosis, family history of thrombosis, or history of thrombophilia; 7. Intracranial hemorrhage within 2 years prior to signing the informed consent form; 8. Severe cardiac disease, such as unstable angina, congestive heart failure (New York Heart Association class ≥III), serious arrhythmia (QTc interval \>450 ms, corrected by Fridericia formula), uncontrolled hypertension (systolic blood pressure ≥160 mmHg or diastolic blood pressure ≥100 mmHg), etc.; 9. Female patients with menstrual abnormalities caused by organic gynecological conditions (e.g., uterine fibroids, endometriosis, adenomyosis, etc.); 10. Received Factor VII-containing products within 48 hours prior to first administration of SR604 Injection; received whole blood or plasma transfusion within 2 weeks prior to first administration of SR604 Injection; 11. Used any anticoagulants, antifibrinolytics, or agents affecting platelet function (including chemical drugs, biological products, or traditional Chinese medicine), including aspirin, within 1 week prior to screening, or required use of such agents during the treatment period; 12. Underwent major surgery (defined as Grade III or IV surgery) within 1 month prior to signing the informed consent form, or planned to undergo surgery during the study period; 13. Enrolled in other clinical trials within 1 month prior to signing the informed consent form; 14. Miscarriage or pregnancy termination within 3 months prior to signing the informed consent form; pregnant or breastfeeding women; 15. Mental illness or significant psychiatric disorder, or incapacity or lack of cognitive ability due to other causes; 16. Other conditions deemed by the investigator to be unsuitable for enrollment, such as alcoholism, anticipated poor subject compliance preventing completion of dosing and study follow-up, poorly controlled comorbid chronic diseases, or serious systemic diseases. \-
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Institute of Hematology & Blood Diseases Hospital, Chinese Academy of Medical Sciences
Tianjin, China
More trials for these conditions
Other studies related to the condition(s) this trial covers.