3 research outputs found
Circulating concentrations of vitamin D in relation to pancreatic cancer risk in European populations.
Evidence from in vivo, in vitro and ecological studies are suggestive of a protective effect of vitamin D against pancreatic cancer (PC). However, this has not been confirmed by analytical epidemiological studies. We aimed to examine the association between pre-diagnostic circulating vitamin D concentrations and PC incidence in European populations. We conducted a pooled nested case-control study within the European Prospective Investigation into Cancer and Nutrition (EPIC) and the Nord-Trøndelag Health Study's second survey (HUNT2) cohorts. In total, 738 primary incident PC cases (EPIC n = 626; HUNT2 n = 112; median follow-up = 6.9 years) were matched to 738 controls. Vitamin D [25(OH)D2 and 25(OH)D3 combined] concentrations were determined using isotope-dilution liquid chromatography-tandem mass spectrometry. Conditional logistic regression models with adjustments for body mass index and smoking habits were used to estimate incidence rate ratios (IRRs) and 95% confidence intervals (95%CI). Compared with a reference category of >50 to 75 nmol/L vitamin D, the IRRs (95% CIs) were 0.71 (0.42-1.20); 0.94 (0.72-1.22); 1.12 (0.82-1.53) and 1.26 (0.79-2.01) for clinically pre-defined categories of ≤25; >25 to 50; >75 to 100; and >100 nmol/L vitamin D, respectively (p for trend = 0.09). Corresponding analyses by quintiles of season-standardized vitamin D concentrations also did not reveal associations with PC risk (p for trend = 0.23). Although these findings among participants from the largest combination of European cohort studies to date show increasing effect estimates of PC risk with increasing pre-diagnostic concentrations of vitamin D, they are not statistically significant
Circulating concentrations of vitamin D in relation to pancreatic cancer risk in European populations
Evidence from in vivo, in vitro and ecological studies are suggestive of a protective effect of vitamin D against pancreatic cancer (PC). However, this has not been confirmed by analytical epidemiological studies. We aimed to examine the association between pre-diagnostic circulating vitamin D concentrations and PC incidence in European populations. We conducted a pooled nested case-control study within the European Prospective Investigation into Cancer and Nutrition (EPIC) and the Nord-Trøndelag Health Study's second survey (HUNT2) cohorts. In total, 738 primary incident PC cases (EPIC n = 626; HUNT2 n = 112; median follow-up = 6.9 years) were matched to 738 controls. Vitamin D [25(OH)D2 and 25(OH)D3 combined] concentrations were determined using isotope-dilution liquid chromatography-tandem mass spectrometry. Conditional logistic regression models with adjustments for body mass index and smoking habits were used to estimate incidence rate ratios (IRRs) and 95% confidence intervals (95%CI). Compared with a reference category of >50 to 75 nmol/L vitamin D, the IRRs (95% CIs) were 0.71 (0.42-1.20); 0.94 (0.72-1.22); 1.12 (0.82-1.53) and 1.26 (0.79-2.01) for clinically pre-defined categories of ≤25; >25 to 50; >75 to 100; and >100 nmol/L vitamin D, respectively (p for trend = 0.09). Corresponding analyses by quintiles of season-standardized vitamin D concentrations also did not reveal associations with PC risk (p for trend = 0.23). Although these findings among participants from the largest combination of European cohort studies to date show increasing effect estimates of PC risk with increasing pre-diagnostic concentrations of vitamin D, they are not statistically significant
Circulating concentrations of vitamin D in relation to pancreatic cancer risk in European populations
Evidence from in vivo, in vitro and ecological studies are suggestive of
a protective effect of vitamin D against pancreatic cancer (PC).
However, this has not been confirmed by analytical epidemiological
studies. We aimed to examine the association between pre-diagnostic
circulating vitamin D concentrations and PC incidence in European
populations. We conducted a pooled nested case-control study within the
European Prospective Investigation into Cancer and Nutrition (EPIC) and
the Nord-TrOndelag Health Study’s second survey (HUNT2) cohorts. In
total, 738 primary incident PC cases (EPIC n=626; HUNT2 n=112; median
follow-up=6.9 years) were matched to 738 controls. Vitamin D
[25(OH)D-2 and 25(OH)D-3 combined] concentrations were determined
using isotope-dilution liquid chromatography-tandem mass spectrometry.
Conditional logistic regression models with adjustments for body mass
index and smoking habits were used to estimate incidence rate ratios
(IRRs) and 95% confidence intervals (95%CI). Compared with a reference
category of >50 to 75 nmol/L vitamin D, the IRRs (95% CIs) were 0.71
(0.42-1.20); 0.94 (0.72-1.22); 1.12 (0.82-1.53) and 1.26 (0.79-2.01) for
clinically pre-defined categories of 25; >25 to 50; >75 to 100; and >100
nmol/L vitamin D, respectively (p for trend=0.09). Corresponding
analyses by quintiles of season-standardized vitamin D concentrations
also did not reveal associations with PC risk (p for trend=0.23).
Although these findings among participants from the largest combination
of European cohort studies to date show increasing effect estimates of
PC risk with increasing pre-diagnostic concentrations of vitamin D, they
are not statistically significant