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NCT06919510PHASE2NOT_YET_RECRUITING

A Phase ll Study of Neoadjuvant Short-course Radiotherapy Followed by Ivonescimab and Chemotherapy in pMMR/MSS Locally Advanced Rectal Cancer

A Phase ll Study of Neoadjuvant Short-course Radiotherapy Followed by Lvonescimab and Chemotherapy Versus Neoadjuvant Short-course Radiotherapy Followed by Chemotherapy in pMMR/MSS Locally Advanced Rectal Cancer

Sponsor: Sun Yat-sen University + Akeso

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Key Facts

Study type
INTERVENTIONAL
Conditions
Rectal Adenocarcinoma
Interventions
lvonescimab, CAPOX (oxaliplatin/capecitabine), radiotherapy, Surgery or watch&wait
Enrollment
90 participants
Primary completion
Jun 2026
Study completion
Dec 2028
First posted
Apr 2025
Last updated
Apr 2025

Primary Endpoints (CT.gov)

Adverse events

Time frame: Through study completion, an average of 6 month

Complete response rate

Time frame: 4 weeks after curative surgery for pCR; 2-4 weeks after the completion of neoadjuvant therapy (last dose of capecitabine) for cCR

Clinical complete response rate

Time frame: 2-4 weeks after the completion of neoadjuvant therapy (last dose of capecitabine)

Secondary Endpoints

Pathologic complete response

TRG

R0 resection rate

Eligibility Criteria

Inclusion Criteria: 1. Age between 18 and 75 years; 2. ECOG perfommance status of 0 or 1; 3. Life expectancy: more than 2 years; 4. Histologically proven rectal adenocarcinoma; 5. Tumor biopsy immunohistochemistry proven pMMR, positive for four proteins, MLH1, MSH2, MSH6 and PMS2, or MSS determined by gene testing; 6. According to the 8th Edition of the AJCC Staging Manual, clinical stage cT3-4NanyM0 or cTxN+M0 of II-III rectal cancer was determined by Magnetic resonance imaging (MRI)±transrectal ultrasonography/ ultrasound endoscopy. Lower edge of the tumor was ≤ 12 cm from the anal verge; 7. Eligible for R0 surgery; 8. No prior anti-tumor treatment for rectal cancer,including radiotherapy,chemotherapy, immunotherapy, biologics, small molecule targeted therapy, etc; 9. Adequate organ function; 10. Males or females with reproductive ability who are willing to use contraception in the trial; Exclusion Criteria: 1. Any distant metastasis or inoperable disease, regardless clinical stag

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✦ Analyst Commentary

Expert commentary on why this trial matters and what to watch for.

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Source

Open on ClinicalTrials.gov