This competitive grant application seeks continued support of the International Research Scientist Development Award (IRSDA) from Fogarty International Center of NIH. As part of the first funding period (9/2002 to 8/2005), we have successfully established local contacts, built resources and infrastructure, and collected family material for linkage studies to identify type 2 diabetes mellitus (T2DM) genes in an endogamous population of Khatri Sikhs in North India. With limited resources, we have already collected 324 sib pair families with 515 affected sib pairs (ASPs). We have named this Phase-l of the Sikh Diabetes Study (SDS). The NHLBI's Mammalian Genotyping Services will perform a whole-genome scan on the Phase-l family sample. We expect that the genome-wide scan of Phase-l will be completed by the end of 2005. We propose following aims for this renewal application:
Aim 1 : To carry out linkage analyses to map the location of T2DM susceptibility loci.
Aim 2 : To recruit a large size case-control cohort 700 cases and 700 controls from the Khatri- Sikh community as a resource for future association studies.
Aim 3 : To screen selected biological candidate genes falling under linkage peaks (Aim 1) by case-control association studies. We recently submitted an exploratory R21 grant to NIDDK to perform linkage analysis on the genome scan data and to also initiate a pilot case-control study. Since the outcome of R21 is uncertain, we have tentatively proposed to perform linkage analysis as part of this renewal (Aim 1). However, if the R21 application is funded, we will instead focus on collecting an even larger case-control cohort of 1,500 cases and 1,500 controls (Aim 2) and on screening some candidate genes (Aim 3). We believe that our study is unique and novel and there is a high probability that it will yield new information on genetic basis of T2DM in Indians. Renewal of this award will help by strengthening the Indo-US collaboration established during Phase-l of SDS for addressing a major public health problem of a developing country. Continued support of IRSDA at the conceptual stage of study will substantially promote the scientific development of the candidate to enable her to ultimately achieve a productive International career. ? ?

Agency
National Institute of Health (NIH)
Institute
Fogarty International Center (FIC)
Type
Research Scientist Development Award - Research & Training (K01)
Project #
5K01TW006087-05
Application #
7126001
Study Section
Special Emphasis Panel (ZRG1-ICP-2 (51))
Program Officer
Jessup, Christine
Project Start
2002-09-18
Project End
2007-01-31
Budget Start
2006-09-01
Budget End
2007-01-31
Support Year
5
Fiscal Year
2006
Total Cost
$53,067
Indirect Cost
Name
University of Pittsburgh
Department
Genetics
Type
Schools of Public Health
DUNS #
004514360
City
Pittsburgh
State
PA
Country
United States
Zip Code
15213
Imamura, Minako; Takahashi, Atsushi; Yamauchi, Toshimasa et al. (2016) Genome-wide association studies in the Japanese population identify seven novel loci for type 2 diabetes. Nat Commun 7:10531
Scott, William R; Zhang, Weihua; Loh, Marie et al. (2016) Investigation of Genetic Variation Underlying Central Obesity amongst South Asians. PLoS One 11:e0155478
Saxena, Richa; Bjonnes, Andrew; Prescott, Jennifer et al. (2014) Genome-wide association study identifies variants in casein kinase II (CSNK2A2) to be associated with leukocyte telomere length in a Punjabi Sikh diabetic cohort. Circ Cardiovasc Genet 7:287-95
Blackett, Piers R; Sanghera, Dharambir K (2013) Genetic determinants of cardiometabolic risk: a proposed model for phenotype association and interaction. J Clin Lipidol 7:65-81
Li, H; Kilpeläinen, T O; Liu, C et al. (2012) Association of genetic variation in FTO with risk of obesity and type 2 diabetes with data from 96,551 East and South Asians. Diabetologia 55:981-95
Braun, Timothy R; Been, Latonya F; Singhal, Akhil et al. (2012) A replication study of GWAS-derived lipid genes in Asian Indians: the chromosomal region 11q23.3 harbors loci contributing to triglycerides. PLoS One 7:e37056
Schierer, Ashley; Been, Latonya F; Ralhan, Sarju et al. (2012) Genetic variation in cholesterol ester transfer protein, serum CETP activity, and coronary artery disease risk in Asian Indian diabetic cohort. Pharmacogenet Genomics 22:95-104
Been, L F; Hatfield, J L; Shankar, A et al. (2012) A low frequency variant within the GWAS locus of MTNR1B affects fasting glucose concentrations: genetic risk is modulated by obesity. Nutr Metab Cardiovasc Dis 22:944-51
Been, Latonya F; Ralhan, Sarju; Wander, Gurpreet S et al. (2011) Variants in KCNQ1 increase type II diabetes susceptibility in South Asians: a study of 3,310 subjects from India and the US. BMC Med Genet 12:18
Kooner, Jaspal S; Saleheen, Danish; Sim, Xueling et al. (2011) Genome-wide association study in individuals of South Asian ancestry identifies six new type 2 diabetes susceptibility loci. Nat Genet 43:984-9

Showing the most recent 10 out of 19 publications