OnCo
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Anti-GD2 antibody + irinotecan-temozolomide (chemoimmunotherapy)

Adding the anti-GD2 antibody to relapse chemotherapy doubled response rates in relapsed neuroblastoma, and the idea is now moving into first-line induction.

ANBL1221: irinotecan-temozolomide-dinutuximab ORR 53% vs 18% for temsirolimus arm; now standard for first relapse; ANBL17P1 tests dinutuximab during induction; naxitamab-chemotherapy combinations similar.

Rationale
Chemotherapy releases antigen and depletes suppressive cells while the antibody directs ADCC; GD2 is not downregulated by chemotherapy.
Evidence
Randomised phase 2 (ANBL1221) and confirmatory expansion.

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