HEALTH PROFESSIONAL · SOURCE READING
Advanced-stage therapy
Source: Anal Cancer Treatment (PDQ®)–Health Professional Version, National Cancer Institute.
Source updated: February 12, 2025 · Captured 2026-09-09.
Selected source text with whitespace normalised. This Triangle page is not an NCI PDQ summary.
Context: Treatment of Stage IV Anal Cancer / Treatment Options for Stage IV Anal Cancer
In the multicenter, randomized, phase II International Advanced Anal Cancer InterAACT trial (NCT02560298), carboplatin (area under the curve 5) and weekly paclitaxel was compared with standard infusional 5-FU and bolus cisplatin in patients with advanced-stage anal cancer.[2]These promising findings have led international investigators to use carboplatin and paclitaxel as a new backbone in trials for patients with advanced-stage disease, as well as a potential partner for use with radiation therapy. Other chemotherapy regimens, such as modified docetaxel, cisplatin, and 5-FU, are under clinical evaluation.[3]
In the multicenter, randomized, phase II International Advanced Anal Cancer InterAACT trial (NCT02560298), carboplatin (area under the curve 5) and weekly paclitaxel was compared with standard infusional 5-FU and bolus cisplatin in patients with advanced-stage anal cancer.[2]These promising findings have led international investigators to use carboplatin and paclitaxel as a new backbone in trials for patients with advanced-stage disease, as well as a potential partner for use with radiation therapy. Other chemotherapy regimens, such as modified docetaxel, cisplatin, and 5-FU, are under clinical evaluation.[3]
With a median follow-up of 25.3 months, the median overall survival (OS) with carboplatin and paclitaxel was improved compared with cisplatin and 5-FU (20 months vs. 12.3 months; hazard ratio [HR], 2.0; P = .014).[Level of evidence A1]
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In the multicenter, randomized, phase II International Advanced Anal Cancer InterAACT trial (NCT02560298), carboplatin (area under the curve 5) and weekly paclitaxel was compared with standard infusional 5-FU and bolus cisplatin in patients with advanced-stage anal cancer.[2]These promising findings have led international investigators to use carboplatin and paclitaxel as a new backbone in trials for patients with advanced-stage disease, as well as a potential partner for use with radiation therapy. Other chemotherapy regimens, such as modified docetaxel, cisplatin, and 5-FU, are under clinical evaluation.[3]
Serious adverse events were more common in patients treated with cisplatin plus 5-FU (62% vs. 36%; P = .016).
The checkpoint inhibitors have also shown activity for patients with metastatic disease. The phase II NCI96773 trial (NCT02314169) of single-agent nivolumab (3 mg/kg every 2 weeks) enrolled 37 patients.[4]
The checkpoint inhibitors have also shown activity for patients with metastatic disease. The phase II NCI96773 trial (NCT02314169) of single-agent nivolumab (3 mg/kg every 2 weeks) enrolled 37 patients.[4]
The overall response rate was 24%, including two complete responses.[4][Level of evidence C3]
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The phase Ib KEYNOTE-028 trial (NCT02054806) for patients with advanced tumors with programmed death ligand-1 of at least 1% enrolled a cohort of 24 patients with anal squamous cell carcinoma.[5]
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The phase Ib KEYNOTE-028 trial (NCT02054806) for patients with advanced tumors with programmed death ligand-1 of at least 1% enrolled a cohort of 24 patients with anal squamous cell carcinoma.[5]
The overall response rate was 17%, and an additional stable disease rate was 42%.[5][Level of evidence C3]
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Although there is no clear standard of care for patients with metastatic disease, recent studies are uncovering promising new avenues for systemic treatment. Palliation of symptoms from the primary lesion is important. Patients with stage IV disease should strongly consider enrolling in clinical trials.
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