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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Am+J+Gastroenterol
2016 ; 111
(9
): 1350-7
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Metformin Improves Survival in Patients with Pancreatic Ductal Adenocarcinoma and
Pre-Existing Diabetes: A Propensity Score Analysis
#MMPMID27430290
Amin S
; Mhango G
; Lin J
; Aronson A
; Wisnivesky J
; Boffetta P
; Lucas AL
Am J Gastroenterol
2016[Sep]; 111
(9
): 1350-7
PMID27430290
show ga
OBJECTIVES: Pancreatic ductal adenocarcinoma (PDAC) remains a highly lethal
disease. Diabetes mellitus (DM) is both a risk factor for and a sequela of PDAC.
Metformin is a commonly prescribed biguanide oral hypoglycemic used for the
treatment of type II DM. We investigated whether metformin use before PDAC
diagnosis affected survival of patients with DM, controlling confounders such as
diabetic severity. METHODS: We used the Surveillance, Epidemiology, and End
Results registry (SEER)-Medicare linked database to identify patients with PDAC
diagnosed between 2007 and 2011. The diabetic TO comorbidity severity index
(DCSI) controlled for DM severity. Inverse propensity weighted Cox
Proportional-Hazard Models assessed the association between metformin use and
overall survival adjusting for relevant confounders. RESULTS: We identified 1,916
patients with PDAC and pre-existing DM on hypoglycemic medications at least 1
year before cancer diagnosis. Of these, 1,098 (57.3%) were treated with metformin
and 818 (42.7%) with other DM medications. Mean survival for those on metformin
was 5.5 months compared with 4.2 months for those not on metformin (P<0.01).
After adjusting for confounders including DCSI, Charlson score, and chronic
kidney disease (CKD), patients on metformin had a 12% decreased risk of mortality
compared with patients on other medications (hazard ratio (HR): 0.88, 95%
confidence interval (CI): 0.81-0.96, P<0.01). In stratified analysis, differences
persisted regardless of the Charlson score, the DCSI score, the presence of
kidney disease, or the use of insulin/other hypoglycemic medications (P<0.01 for
all). CONCLUSIONS: Metformin is associated with increased survival among
diabetics with PDAC. If confirmed in a prospective study, then these results
suggest a possible role for metformin as an adjunct to chemotherapy among
diabetics with PDAC.
|Aged
[MESH]
|Aged, 80 and over
[MESH]
|Carcinoma, Pancreatic Ductal/*mortality
[MESH]
|Comorbidity
[MESH]
|Diabetes Mellitus, Type 2/*drug therapy/epidemiology
[MESH]