Apixaban for portal vein clots that appear more than a year after laparoscopic splenectomy
Official title: Efficacy of Apixaban in Treating Portal Vein Thrombosis Occurring More Than One Year After Laparoscopic Splenectomy
Run by Northern Jiangsu People's Hospital · NCT07461545 · Data updated 2026-11-12
This trial tests whether taking apixaban twice daily can treat portal vein blood clots that develop more than a year after laparoscopic splenectomy in people with cirrhosis.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 20 (estimated) |
| Sponsor | Northern Jiangsu People's Hospital Academic / other |
| Locations | 1 site (Yangzhou, Jiangsu) |
| Status | Recruiting |
| Started | April 1, 2026 |
| Main results expected | September 30, 2027 |
| Study ends | September 30, 2027 |
| Registry record updated | March 31, 2026 |
| Trial ID | NCT07461545 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
People with cirrhosis who underwent laparoscopic splenectomy at the enrolling center, had no postoperative portal vein thrombosis in months 6–12, and then developed portal vein thrombosis more than 12 months after surgery are ideal candidates.
✕Probably not a fit
Patients with high bleeding risk, advanced liver failure, active hepatocellular carcinoma, or those who developed portal vein thrombosis within the first year after surgery may not benefit from this protocol.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Adults with cirrhosis who had laparoscopic splenectomy at the center and who develop portal vein thrombosis more than 12 months after surgery will receive oral apixaban 2.5 mg twice daily. Treatment response will be monitored every three months using Doppler ultrasound or contrast-enhanced CT scans, and patients who show clot resolution or improvement will continue apixaban. Eligible participants previously had perioperative prophylaxis and no imaging evidence of thrombosis during months 6–12 postoperatively. Safety monitoring for bleeding and liver-related events will be performed during follow-up.
Why it matters
Potential benefit: If successful, apixaban could offer an effective oral treatment to clear or control portal vein thrombosis that appears late after splenectomy, potentially reducing clot-related complications.
How similar studies have gone: Small studies and case series of direct oral anticoagulants, including apixaban, have shown promise for portal vein thrombosis in cirrhosis, but larger controlled data are still limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: 1. A clinical, radiological, or histologic diagnosis of cirrhosis of any etiology. 2. Splenomegaly with secondary hypersplenism. 3. No evidence of portal vein thrombosis by ultrasound evaluation and angio-CT prior to surgery. 4. Underwent laparoscopic splenectomy at our center. 5. Orally received 2.5 mg of apixaban (CTTQ, Nanjing, China) twice daily or a 100 mg aspirin tablet (Bayer, Leverkusen, Germany) once daily for 6 months from POD 3. 6. subcutaneous injections of low molecular weight heparin sodium (CSBio, Hebei, China) were administered for 5 days from POD 3 7. Oral dipyridamole (Henan Furen, Henan, China) at a dosage of 25 mg, administered three times daily for 3 months from POD 3. 8. Had no imaging evidence (Doppler ultrasound or CT) of portal vein thrombosis during postoperative months 6 to 12. 9. Developed portal vein thrombosis after 12 months post-surgery. 10. Provided informed consent to participate in the study. Exclusion Criteria: 1. Hepatocellular carcinoma or any other malignancy. 2. Hypercoagulable state other than the liver disease related. 3. DRUGS- oral contraceptives, anticoagulation or anti-platelet drugs. 4. Portal hypertension bleeding . 5. Child - Pugh C 6. Recent peptic ulcer disease 7. History of Hemorrhagic stroke 8. Pregnancy. 9. Uncontrolled Hypertension 10. Human immunodeficiency virus (HIV) infection
Where it's running
-
Clinical Medical College
Yangzhou, Jiangsu, China Recruiting
Study contacts
- Study coordinator: Guo-Qing Jiang
- Email: jgqing2003@hotmail.com
- Phone: +8651487373382
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Apixaban for portal vein thrombosis occurring more than one year after laparoscopic splenectomy and azygoportal disconnection
This trial will try whether taking apixaban 2.5 mg twice daily can treat portal vein clots that appear more than a year after laparoscopic splenectomy and azygoportal disconnection in people with cirrhosis.
-
Apixaban plus carvedilol to prevent portal-hypertension complications in cirrhosis
This will test whether adding apixaban to carvedilol can help prevent variceal bleeding, portal vein thrombosis, and other portal-hypertension complications in adults with Child-Pugh B cirrhosis.
-
Factors that affect reopening of blocked portal veins in people with cirrhosis and gastroesophageal varices
This project looks at past records and follow-up to see which factors are linked with reopening (recanalization) of blocked portal veins in people who have cirrhosis and endoscopy-confirmed gastroesophageal varices.
-
Vagus nerve–guided laparoscopic spleen removal with azygoportal disconnection
This procedure tests whether a vagus nerve–guided laparoscopic spleen removal plus azygoportal disconnection helps people with cirrhosis, portal hypertension, and hypersplenism who have had gastroesophageal variceal bleeding.
-
Education to prevent infections after spleen removal
See if a targeted educational program for adults who had their spleen removed improves vaccination uptake, awareness of infection risk, and continuity of care.
-
Comparing blood thinners for people with cirrhosis and portal vein clots
This will try enoxaparin, warfarin, or apixaban in people with cirrhosis and portal vein thrombosis (with or without liver cancer) to see which controls the clot and is safest.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.