PMID- 35849782 OWN - NLM STAT- MEDLINE DCOM- 20220721 LR - 20220729 IS - 0890-9091 (Print) IS - 0890-9091 (Linking) VI - 36 IP - 7 DP - 2022 Jul 11 TI - A Pilot Study of Omalizumab to Treat Oxaliplatin-Induced Hypersensitivity Reaction. PG - 414-419 LID - 10.46883/2022.25920965 [doi] AB - BACKGROUND: Oxaliplatin hypersensitivity reactions (HSRs) are immunoglobulin E (IgE)-mediated and prevent maximum benefit from this drug. This study was designed to determine whether oxaliplatin HSRs could be prevented or reduced with omalizumab (Xolair), an anti-IgE antibody. PATIENTS/METHODS: This was a single-arm prospective pilot study. Patients receiving oxaliplatin-based chemotherapy for gastrointestinal cancers who were experiencing grade 1/2 HSRs were eligible. Patients received omalizumab 300 mg subcutaneously every 2 weeks, alternating with oxaliplatin-based chemotherapy. Nine patients enrolled. The primary end point was reduction of repeat HSR over the next 2 cycles. The sample size of 12 patients would achieve 79% power to detect a decrease from HSR rate of 70% (the null hypothesis) to 35% using a 1-sided binomial test. The study would be considered positive if fewer than 6 HSR events over 2 cycles occurred on omalizumab. RESULTS: Nine patients received 58 cycles of omalizumab. The mean number of treatments was 6 (range, 1-12). Eight of 9 patients (88%) completed 2 or more cycles and 7 (78%) completed 4 or more cycles; the overall rate of HSR was 12%. Five of 7 evaluable patients had stable disease, including 1 with near partial response. CONCLUSIONS: Omalizumab reduces or abrogates oxaliplatin HSRs and allows months of additional therapy with apparent clinical benefit. FAU - Stein, Stacy AU - Stein S FAU - Dooley, Kirsten AU - Dooley K FAU - Ubohla, Nataliya V AU - Ubohla NV FAU - Hochster, Howard S AU - Hochster HS LA - eng PT - Journal Article PL - United States TA - Oncology (Williston Park) JT - Oncology (Williston Park, N.Y.) JID - 8712059 RN - 04ZR38536J (Oxaliplatin) RN - 2P471X1Z11 (Omalizumab) SB - IM MH - *Drug Hypersensitivity/drug therapy/etiology MH - Humans MH - *Omalizumab/therapeutic use MH - Oxaliplatin/adverse effects MH - Pilot Projects MH - Prospective Studies OTO - NOTNLM OT - gastrointestinal malignancies OT - hypersensitivity reaction omalizumab Trial registration: Role of Omalizumab in Reducing the Incidence of Oxaliplatin-induced Hypersensitivity Reaction ClinicalTrials.gov Identifier: NCT02266355. OT - oxaliplatin EDAT- 2022/07/19 06:00 MHDA- 2022/07/22 06:00 CRDT- 2022/07/18 15:41 PHST- 2022/07/18 15:41 [entrez] PHST- 2022/07/19 06:00 [pubmed] PHST- 2022/07/22 06:00 [medline] AID - 25920965 [pii] AID - 10.46883/2022.25920965 [doi] PST - ppublish SO - Oncology (Williston Park). 2022 Jul 11;36(7):414-419. doi: 10.46883/2022.25920965.