Association analysis of type 2 diabetes Loci in type 1 diabetes
HQ Qu, SFA Grant, JP Bradfield, C Kim, E Frackelton… - Diabetes, 2008 - Am Diabetes Assoc
HQ Qu, SFA Grant, JP Bradfield, C Kim, E Frackelton, H Hakonarson, C Polychronakos
Diabetes, 2008•Am Diabetes AssocOBJECTIVE—To search for a possible association of type 1 diabetes with 10 validated type
2 diabetes loci, ie, PPARG, KCNJ11, WFS1, HNF1B, IDE/HHEX, SLC30A8, CDKAL1,
CDKN2A/B, IGF2BP2, and FTO/RPGRIP1L. RESEARCH DESIGN AND METHODS—Two
European population samples were studied: 1) one case-control cohort of 514 type 1
diabetic subjects and 2,027 control subjects and 2) one family cohort of 483 complete type 1
diabetic case-parent trios (total 997 affected). A total of 13 tag single nucleotide …
2 diabetes loci, ie, PPARG, KCNJ11, WFS1, HNF1B, IDE/HHEX, SLC30A8, CDKAL1,
CDKN2A/B, IGF2BP2, and FTO/RPGRIP1L. RESEARCH DESIGN AND METHODS—Two
European population samples were studied: 1) one case-control cohort of 514 type 1
diabetic subjects and 2,027 control subjects and 2) one family cohort of 483 complete type 1
diabetic case-parent trios (total 997 affected). A total of 13 tag single nucleotide …
OBJECTIVE—To search for a possible association of type 1 diabetes with 10 validated type 2 diabetes loci, i.e., PPARG, KCNJ11, WFS1, HNF1B, IDE/HHEX, SLC30A8, CDKAL1, CDKN2A/B, IGF2BP2, and FTO/RPGRIP1L.
RESEARCH DESIGN AND METHODS—Two European population samples were studied: 1) one case-control cohort of 514 type 1 diabetic subjects and 2,027 control subjects and 2) one family cohort of 483 complete type 1 diabetic case-parent trios (total 997 affected). A total of 13 tag single nucleotide polymorphisms (SNPs) from the 10 type 2 diabetes loci were analyzed for type 1 diabetes association.
RESULTS—No association of type 1 diabetes was found with any of the 10 type 2 diabetes loci, and no age-at-onset effect was detected. By combined analysis using the Wellcome Trust Case-Control Consortium type 1 diabetes data, SNP rs1412829 in the CDKN2A/B locus bordered on significance (P = 0.039) (odds ratio 0.929 [95% CI 0.867–0.995]), which did not reach the statistical significance threshold adjusted for 13 tests (α = 0.00385).
CONCLUSIONS—This study suggests that the type 2 diabetes loci do not play any obvious role in type 1 diabetes genetic susceptibility. The distinct molecular mechanisms of the two diseases highlighted the importance of differentiation diagnosis and different treatment principles.
Am Diabetes Assoc
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