Fixed-dose-rate gemcitabine: a viable first-line treatment option for advanced pancreatic and biliary tract cancer.
BACKGROUND
We have already reported on fixed-dose-rate gemcitabine (FDR-Gem) in advanced, inoperable pancreatic ductal adenocarcinoma (PDAC) and biliary tract cancer (BTC) in the context of a formal phase II study; building on that experience, we have now expanded the study to reach a cumulative accrual of 106 patients.


METHODS
One hundred six patients (PDAC/BTC, 75/31) were treated with weekly FDR-Gem (1,000 mg/m(2) infused at 10 mg/m(2) per minute). Patient characteristics included: male-to-female ratio, 0.83; median age, 63 years (range, 28-82); metastatic disease in 66% of patients; and an Eastern Cooperative Oncology Group performance status (ECOG PS) score of 0-1 in 81% of patients.


RESULTS
The median and total number of treatment weeks delivered were 8 (range, 2-22) and 1,154, respectively. Thirteen percent of patients achieved an objective response, 42% experienced a positive clinical benefit response, and 54% achieved a >50% reduction in serum cancer antigen (CA)19.9 levels. The median progression-free survival (PFS) and overall survival (OS) times for the entire population were 4.4 months (95% confidence interval [CI], 3.5-5.1 months) and 7.7 months (95% CI, 6.3-8.8 months), respectively, with 20% of patients alive at 1 year. On multivariate analysis, a CA19.9 reduction >50% and baseline ECOG PS score of 0 were the only independent predictors of PFS and OS, respectively. Treatment was well tolerated, with grade 3-4 neutropenia in 47 of 1,154 treatment weeks (4.1%), and grade 3 anemia and thrombocytopenia in 8 of 1,154 (0.7%) and 16 of 1,154 (1.4%) treatment weeks, respectively.


CONCLUSIONS
Currently available evidence, including this updated analysis, supports the use of FDR-Gem as a first-line option in advanced PDAC, and possibly in BTC, patients and prompts the continued evaluation of this approach in combination regimens.
Milella
Michele
M
Medical Oncology A and C, Regina Elena National Cancer Institute, and Medical Oncology, S Andrea Hospital, Rome Italy.
Gelibter
Alain J
AJ
Pino
Maria Simona
MS
Bossone
Giandominik
G
Marolla
Paolo
P
Sperduti
Isabella
I
Cognetti
Francesco
F
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000964:Antimetabolites, Antineoplastic / Q000008:administration & dosage*; D001661:Biliary Tract Neoplasms / Q000188:drug therapy* / Q000473:pathology; D021441:Carcinoma, Pancreatic Ductal / Q000188:drug therapy* / Q000473:pathology; D003841:Deoxycytidine / Q000008:administration & dosage / Q000031:analogs & derivatives*; D018572:Disease-Free Survival; D004334:Drug Administration Schedule; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome; D000093542:Gemcitabine
D000964:Antimetabolites, Antineoplastic; D003841:Deoxycytidine; D000093542:Gemcitabine