PMID- 27372908 OWN - NLM STAT- MEDLINE DCOM- 20170606 LR - 20181113 IS - 1432-0843 (Electronic) IS - 0344-5704 (Print) IS - 0344-5704 (Linking) VI - 78 IP - 2 DP - 2016 Aug TI - Association of concurrent acid-suppression therapy with survival outcomes and adverse event incidence in oncology patients receiving erlotinib. PG - 427-32 LID - 10.1007/s00280-016-3087-6 [doi] AB - PURPOSE: Acid-suppression therapy is known to decrease the systemic exposure of erlotinib. The erlotinib prescribing information recommends staggering dosing with a histamine-2 receptor antagonist (H2RA) and avoiding concurrent use of a proton pump inhibitor (PPI). This retrospective analysis evaluated the frequency of concurrent acid-suppression therapy in oncology patients receiving erlotinib and its association with outcomes. METHODS: All patients prescribed erlotinib within UC San Diego Health System between February 26, 2011, and February 28, 2014, were assessed for eligibility, survival outcomes and adverse events. RESULTS: Of the 76 patients in the analysis, 24 were prescribed both a PPI and an H2RA with erlotinib therapy (31.6 %). The two patient groups, with (n = 24) and without PPI/H2RA (n = 52), were similar in clinical characteristics and erlotinib dose. One patient received an H2RA therapy alone and was excluded from the analysis; no one received PPI therapy alone. Patients receiving erlotinib alone had a longer median progression-free survival (PFS) compared to patients with concurrent PPI/H2RA therapy (11.0 months vs. 5.3 months; P = 0.029). Overall survival (OS) and incidence of rash and/or diarrhea did not correlate with use of acid-suppression therapy. CONCLUSION: Nearly one-third of patients received acid-suppression therapy. Patients treated with erlotinib and PPI/H2RA therapy had shorter PFS, but similar OS and adverse event profile compared to those who did not receive acid-suppression. FAU - Lam, Lisa H AU - Lam LH AD - Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, MC 0657, San Diego, La Jolla, CA, 92093-0657, USA. FAU - Capparelli, Edmund V AU - Capparelli EV AD - Skaggs School of Pharmacy and Pharmaceutical Sciences, University of California, 9500 Gilman Drive, MC 0657, San Diego, La Jolla, CA, 92093-0657, USA. ecapparelli@ucsd.edu. FAU - Kurzrock, Razelle AU - Kurzrock R AD - Center for Personalized Cancer Therapy and Division of Hematology and Oncology, Moores Cancer Center, UC San Diego Health System, La Jolla, CA, USA. LA - eng GR - U54 HD071600/HD/NICHD NIH HHS/United States PT - Comparative Study PT - Journal Article DEP - 20160702 PL - Germany TA - Cancer Chemother Pharmacol JT - Cancer chemotherapy and pharmacology JID - 7806519 RN - 0 (Antineoplastic Agents) RN - 0 (Histamine H2 Antagonists) RN - 0 (Proton Pump Inhibitors) RN - DA87705X9K (Erlotinib Hydrochloride) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Antineoplastic Agents/*administration & dosage/adverse effects MH - Disease-Free Survival MH - Drug Interactions MH - Erlotinib Hydrochloride/*administration & dosage/adverse effects MH - Female MH - Histamine H2 Antagonists/*administration & dosage MH - Humans MH - Incidence MH - Male MH - Middle Aged MH - Neoplasms/*drug therapy MH - Proton Pump Inhibitors/*administration & dosage MH - Retrospective Studies MH - Survival Rate PMC - PMC4967016 MID - NIHMS800246 OTO - NOTNLM OT - Erlotinib OT - Histamine-2 receptor antagonist OT - Oncology OT - Proton pump inhibitor OT - Survival EDAT- 2016/07/04 06:00 MHDA- 2017/06/07 06:00 PMCR- 2017/08/01 CRDT- 2016/07/04 06:00 PHST- 2016/05/15 00:00 [received] PHST- 2016/06/09 00:00 [accepted] PHST- 2016/07/04 06:00 [entrez] PHST- 2016/07/04 06:00 [pubmed] PHST- 2017/06/07 06:00 [medline] PHST- 2017/08/01 00:00 [pmc-release] AID - 10.1007/s00280-016-3087-6 [pii] AID - 10.1007/s00280-016-3087-6 [doi] PST - ppublish SO - Cancer Chemother Pharmacol. 2016 Aug;78(2):427-32. doi: 10.1007/s00280-016-3087-6. Epub 2016 Jul 2.