RT Journal Article SR Electronic T1 Plasma Chromogranin A Levels Predict Survival and Tumor Response in Patients with Advanced Gastroenteropancreatic Neuroendocrine Tumors JF Anticancer Research JO Anticancer Res FD International Institute of Anticancer Research SP 5661 OP 5669 VO 34 IS 10 A1 WEN-CHI CHOU A1 JEN-SHI CHEN A1 YU-SHIN HUNG A1 JUN-TE HSU A1 TSE-CHING CHEN A1 CHIEN-FENG SUN A1 CHANG-HSIEN LU A1 TSANN-LONG HWANG YR 2014 UL http://ar.iiarjournals.org/content/34/10/5661.abstract AB Aim: To correlate the baseline and change of chromogranin A (CgA) levels with patient survival and tumor response in Asian patients with advanced gastro-enteropancreatic neuroendocrine tumors (GEP-NETs). Patients and Methods: Sixty patients with advanced GEP-NET treated in a medical center between April 2010 and April 2013 were enrolled retrospectively. Plasma CgA level was analyzed for correlation with the patient's clinical outcome and tumor response. Results: Multivariate analysis showed that independent favorable prognostic factors for overall survival were: Eastern Cooperative Oncology Groups performance score 0-1, World Health Organization tumor grade 1-2, single organ metastasis and less than twice the upper normal range of baseline CgA levels. Percentage changes in paired CgA tests (ΔCgA) of more than 17% can predict partial response or stable disease from progressive disease with 91.2% sensitivity and 82.9% specificity. Conclusion: Baseline plasma CgA levels predicted overall survival and ΔCgA predicted treatment response in Asian patients with GEP-NETs.