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1.  Constitutional mismatch repair deficiency syndrome: Do we know it? 
Indian Journal of Human Genetics  2014;20(2):192-194.
Constitutional mismatch repair deficiency syndrome is a rare autosomal recessive syndrome caused by homozygous mutations in mismatch repair genes. This is characterized by the childhood onset of brain tumors, colorectal cancers, cutaneous manifestations of neurofibromatosis-1 like café au lait spots, hematological malignancies, and occasionally other rare malignancies. Here, we would like to present a family in which the sibling had glioblastoma, and the present case had acute lymphoblastic lymphoma and colorectal cancer. We would like to present this case because of its rarity and would add to literature.
PMCID: PMC4228574  PMID: 25400351
Constitutional mismatch repair deficiency; hereditary nonpolyposis colorectal cancer; Lynch syndrome; mismatch repair genes
2.  Guidelines for screening, diagnosis and management of hemoglobinopathies 
Indian Journal of Human Genetics  2014;20(2):101-119.
The β-thalassemias and sickle cell disorders are a major health burden in India. Diagnosis and management of these disorders both in adults and in newborns using appropriate approaches and uniform technology are important in different regions of a vast and diverse country as India. In view of a National Thalassemia Control Program to be launched soon, a need was felt for guidelines on whom to screen, cost-effective technologies that are to be used as well as for establishing prenatal diagnosis programs in regional centers. Newborn screening for sickle cell disorders is in its infancy in India and uniform approaches need to be followed. Also, included are guidelines for monitoring and managing patients who are now growing older and need comprehensive care as well as management of complications of the disease.
PMCID: PMC4228561  PMID: 25400338
Diagnosis; guidelines; hemoglobinopathies; management; sickle cell disease; thalassemia
3.  Genetics in psychiatry 
Indian Journal of Human Genetics  2014;20(2):120-128.
Today, psychiatrists are focusing on genetics aspects of various psychiatric disorders not only for a future classification of psychiatric disorders but also a notion that genetics would aid in the development of new medications to treat these disabling illnesses. This review therefore emphasizes on the basics of genetics in psychiatry as well as focuses on the emerging picture of genetics in psychiatry and their future implications.
PMCID: PMC4228562  PMID: 25400339
Genetics; implications; psychiatry
4.  Mammalian non-classical major histocompatibility complex I and its receptors: Important contexts of gene, evolution, and immunity 
Indian Journal of Human Genetics  2014;20(2):129-141.
The evolutionary conserved, less-polymorphic, nonclassical major histocompatibility complex (MHC) class I molecules: Qa-1 and its human homologue human leukocyte antigen-E (HLA-E) along with HLA-F, G and H cross-talk with the T-cell receptors and also interact with natural killer T-cells and other lymphocytes. Moreover, these nonclassical MHC molecules are known to interact with CD94/NKG2 heterodimeric receptors to induce immune responses and immune regulations. This dual role of Qa-1/HLA-E in terms of innate and adaptive immunity makes them more interesting. This review highlights the new updates of the mammalian nonclassical MHC-I molecules in terms of their gene organization, evolutionary perspective and their role in immunity.
PMCID: PMC4228563  PMID: 25400340
CD94/NKG2; human leukocyte antigen-E; major histocompatibility complex; Qa-1
5.  Methylenetetrahydrofolate reductase polymorphism is not risk factor for Down syndrome in North India 
Indian Journal of Human Genetics  2014;20(2):142-147.
Down syndrome (DS) is the most common cause of mental retardation of genetic etiology with the prevalence rate of 1/700 to 1/1000 live births worldwide. Several polymorphisms in folate/homocysteine metabolism pathways genes have been reported as a risk factor in women for bearing DS child, but very few studies investigated these polymorphisms in DS cases whether there are a risk factor for being DS or not.
We have investigated the association of methylenetetrahydrofolate reductase (MTHFR) with the occurrence of DS in Indian population. MTHFR is one of the key regulatory enzymes involved in the metabolic pathway of homocysteine responsible for the reduction of methyltetrahydrofolate. A total of 32 DS cases and 64 age, sex matched controls were genotyped for MTHFR C677T polymorphism by polymerase chain reaction-restriction fragment length polymorphism.
The observed genotype frequencies were CC = 0.81; CT = 0.17 and TT = 0.02 in controls and CC = 0.81 and CT = 0.19 in DS cases. Frequency of T allele in DS and controls were 0.09 and 0.1, respectively. Significant difference in the distribution of mutant 677T allele was not observed between DS cases and controls (odds ratio = 0.915; 95% confidence intervals: 0.331-2.53; P = 0.864).
Results of this study indicate that MTHFR C677T polymorphism is not risk factor for DS.
PMCID: PMC4228564  PMID: 25400341
Down syndrome; homocysteine; methylation; methylenetetrahydrofolate reductase; polymorphism
6.  Genetic diversity of 15 autosomal short tandem repeats loci using the AmpFLSTR® Identifiler™ kit in a Bhil Tribe Population from Gujarat state, India 
Indian Journal of Human Genetics  2014;20(2):148-152.
The genetic diversity and forensic parameters based on 15 autosomal short tandem repeats (STR) loci; D8S1179,D21S11, D7S820, CSF1PO, D3S1358, TH01, D13S317,D16S539, D2S1338, D19S433, vWA, TPOX, D18S51,D5S818, and FGA in AmpFLSTR® Identifiler™ kit from Applied Biosystems, Foster City, CA, USA were evaluated in saliva samples of 297 unrelated individuals from the Bhil Tribe population of Gujarat state, India to study genetic diversities and relatedness of this population with other national and international populations.
Statistical analysis of the data revealed all loci were within Hardy-Weinberg Equilibrium expectations with the exception of the locus vWA (0.019) and locus D18S51 (0.016). The neighbour joining phylogeny tree and Principal Co-ordinate Analysis plot constructed based on Fst distances from autosomal STRs allele frequencies of the present study and other national as well as international populations show clustering of all the South Asian populations in one branch of the tree, while Middle Eastern and African populations cluster in a separate branch.
Our findings reveal strong genetic affinities seen between the Indo-European (IE) speaking Bhil Tribe of Gujarat and Dravidian groups of South India.
PMCID: PMC4228565  PMID: 25400342
Allelic frequencies; Bhil Tribe; genetic distance; genetic diversity; short tandem repeats
7.  Cost-effectiveness analysis for triple markers serum screening for Down's syndrome in Thai setting 
Indian Journal of Human Genetics  2014;20(2):153-154.
Down's syndrome is an important congenital chromosomal disorder that can be seen around the world. The antenatal screening for this disorder is an important processing in present obstetrics.
Due to the concept of first do no harm, the use of noninvasive test is recommended. The triple marker screening test has been introduced for a few years and acceptable for its efficacy.
However, an important concern is on its cost-effectiveness. Here, the author analyze and present the cost-effectiveness of the triple markers serum screening for Down's syndrome in Thai setting.
According to this work, the cost per effectiveness of triple markers serum screening is slightly lower than standard amniocentesis test.
PMCID: PMC4228566  PMID: 25400343
Down's syndrome; screening; serum; triple markers
8.  Methylenetetrahydrofolate reductase C677T variant in Indian children with craniosynostosis: Its role in the pathogenesis, risk of craniosynostosis 
Indian Journal of Human Genetics  2014;20(2):155-159.
677C to T allele in the 5, 10-methylenetetrahydrofolate reductase (MTHFR) gene has been implicated in the etiology of various syndromes and nonsyndromic diseases but till date no direct studies have been reported with craniosynostosis.
The aim was to study the family-based association of MTHFR polymorphism in different categories of craniosynostosis patients.
This was a cross-sectional study in which 30 patients classified as Apert syndrome, Pfeiffr syndrome and nonsyndromic craniosynostosis patients with their family were recruited. A sample of 3 ml intravenous blood was taken from patients and from their family members (father and mother) in ethylenediaminetetraacetic acid-anticoagulated vacutainer for the purpose of the study. Genomic DNA was extracted from peripheral blood lymphocytes by phenol chloroform extraction method. Primers for MTHFR gene were designed. The polymerase chain reaction was carried out. After successful amplification, a small aliquot (5 μl) of the MTHFR reaction mixture was treated with 1 units of Hinf I restriction enzyme (NEB). Results were obtained and compiled.
A total of 30 patients/participants with craniosynostosis of Indian descent and their parents formed the study group. The genotyping did not confirm an association between the MTHFR 677C to T polymorphism and between different categories of craniosynostosis. When comparing the offspring of mothers statistically significant differences were found.
C667T polymorphism of the MTHFR gene is unlikely to play a role in the pathogenesis of craniosynostosis though maternal MTHFR C677T polymorphism may be a genetic risk factor.
PMCID: PMC4228567  PMID: 25400344
Craniosynostosis; gene; methylenetetrahydrofolate reductase polymorphism
9.  FLT3 and NPM-1 mutations in a cohort of acute promyelocytic leukemia patients from India 
Indian Journal of Human Genetics  2014;20(2):160-165.
Acute promyelocytic leukemia (APL) with t (15;17) is a distinct category of acute myeloid leukemia (AML) and is reported to show better response to anthracyclin based chemotherapy. A favorable overall prognosis over other subtypes of AML has been reported for APL patients but still about 15% patients relapse.
This study evaluated the presence of Famus like tyrosine kinase-3 (FLT3) and nucleophosmin-1 (NPM1) gene mutations in a cohort of 40 APL patients. Bone marrow/peripheral blood samples from patients at the time of diagnosis and follow-up were processed for immunophenotyping, cytogenetic markers and isolation of DNA and RNA. Samples were screened for the presence of mutations in FLT3 and NPM1 genes using polymerase chain reaction followed by sequencing.
Frequency of FLT3/internal tandem duplication and FLT3/tyrosine kinase domain was found to be 25% and 7% respectively. We observed a high frequency of NPM1 mutation (45%) in the present population of APL patients.
PMCID: PMC4228568  PMID: 25400345
Acute promyelocytic leukemia; famus like tyrosine kinase-3; nucleophosmin-1
10.  Insertion-deletions burden in copy number polymorphisms of the Tibetan population 
Indian Journal of Human Genetics  2014;20(2):166-174.
Many studies have been conducted to identify either insertions-deletions (inDels) or copy number variations (CNVs) in humans, but few studies have been conducted to identify both of these forms coexisting in the same region.
To map the functionally significant sites within human genes that are likely to influence human traits and diseases.
In this report, we describe an inDel map in the 1051 Tibetan CNV regions obtained through CNV genotyping using Affymetrix Genome-wide single nucleotide polymorphism 6.0 chip. InDel polymorphisms in these copy number polymorphism regions were identified with a computational approach using the 2500 deoxyribonucleic acid sequences obtained from the 1000 Genome Project.
The study identified a total of 95935 inDels that range from 1 bp to several bps in length which were found scattered across regulatory regions, exons and in introns of genes underlying the CNVs. A study on the distribution of inDels revealed that the majority of inDels were found in coding regions of the genome than the noncoding, while within the genes, inDels in intron regions were more followed by exonic regions and finally the regulatory regions.
Study of inDels in CNV regions contribute to the enhanced understanding of the role played by the two variations and their collective influence on the genome. Further, a collection of these inDel genetic markers will aid in genetic mapping, further understanding of the phenotypic variability, identification of disease genes and in detecting novel CNVs.
PMCID: PMC4228569  PMID: 25400346
Copy number variations; insertions-deletions; insertions-deletions burden; Tibet
11.  Prevalence of genetic variants associated with cardiovascular disease risk and drug response in the Southern Indian population of Kerala 
Indian Journal of Human Genetics  2014;20(2):175-184.
This study reports the prevalence of five clinically significant variants associated with increased risk of cardiovascular disorders, and variable responses of individuals to commonly prescribed cardiovascular drugs in a South Indian population from the state of Kerala.
Genomic DNA isolated from 100 out-patient samples from Kerala were sequenced to examine the frequency of clinically relevant polymorphisms in the genes MYBPC3 (cardiomyopathy), SLCO1B1 (statin-induced myopathy), CYP2C9, VKORC1 (response to warfarin) and CYP2C19 (response to clopidogrel).
Our analyses revealed the frequency of a 25 bp deletion variant of MYBPC3 associated with risk of cardiomyopathy was 7%, and the SLCO1B1 “C” allele associated with risk for statin-induced myopathy was 15% in this sample group. Among the other variants associated with dose-induced toxicity of warfarin, VKORC1 (c.1639G>A), was detected at 22%, while CYP2C9*3 and CYP2C9*2 alleles were present at a frequency of 15% and 3% respectively. Significantly, the tested sample population showed high prevalence (66%) of CYP2C19*2 variant, which determines response to clopidogrel therapy.
We have identified that certain variants associated with cardiovascular disease and related drug response in the five genes, especially those in VKORC1, CYP2C19 and MYBPC3, are highly prevalent in the Kerala population, with almost 2 times higher prevalence of CYP2C19*2 variant compared with other regions in the country. Since the variants chosen in this study have relevance in disease phenotype and/or drug response, and are detected at a higher frequency, this study is likely to encourage clinicians to perform genetic testing before prescribing therapy.
PMCID: PMC4228570  PMID: 25400347
Cardiovascular disease; drug response; drug toxicity; genetic testing
12.  Ectopia cilia with pedigree analysis: Second case report in the world 
Indian Journal of Human Genetics  2014;20(2):185-186.
We present a case of ectopia cilia in a 28-year-old male patient. Ectopia cilia was were seen in the outer third of left upper eyelid. The patient's maternal grandfather also had ectopia cilia of the left upper eyelid as reported by the patient's mother. Ectopia cilia is a rare condition seen in humans. Only 12 cases of ectopic cilia in humans have been reported so far in the world. The present case of ectopia cilia is the second case report in the world with pedigree analysis.
PMCID: PMC4228571  PMID: 25400348
Cilia incarnata; dermoid cyst; distichiasis; ectopia cilia; trichiasis
13.  Fetal valproate syndrome 
Indian Journal of Human Genetics  2014;20(2):187-188.
Antenatal use of anticonvulsant valproic acid can result in a well-recognized cluster of facial dysmorphism, congenital anomalies and neurodevelopmental retardation. In this report, we describe a case with typical features of fetal valproate syndrome (FVS). A 26-year-old female with epilepsy controlled on sodium valproate 800 mg/day since 3 years, gave birth to a male child with characteristic features of FVS. She also had 3 spontaneous first-trimester abortions during those 3 years. Sodium valproate, a widely used anticonvulsant and mood regulator, is a well-recognized teratogen that can result in facial dysmorphism, craniosynostosis, neural tube defects, and neurodevelopmental retardation. Therefore, we strongly recommend avoidance of valproic acid and supplementation of folic acid during pregnancy.
PMCID: PMC4228572  PMID: 25400349
Anticonvulsant; pregnancy; sodium valproate
14.  Wildervanck syndrome with hypoplastic frontal sinus: A rare case presentation 
Indian Journal of Human Genetics  2014;20(2):189-191.
We report a case of Wildervanck syndrome exhibiting Klippel–Feil anomaly, Duane's retraction syndrome and congenital deafness. Since the first case was reported in 1952, there have been more reports describing this triad either complete or incomplete. Our case has a complete triad of the syndrome along with frontal sinus hypoplasia. Our case is unique as the triad was associated with frontal sinus hypoplasia, which is very rare association.
PMCID: PMC4228573  PMID: 25400350
Duane's syndrome; frontal sinus hypoplasia; Klippel Klippel–Feil deformity; Wildervanck syndrome
15.  Omphalocele, exstrophy of cloaca, imperforate anus and spinal defect (OEIS Complex) with overlapping features of body stalk anomaly (limb body wall complex) 
Indian Journal of Human Genetics  2014;20(2):195-198.
OEIS is an extremely rare constellation of malformations, which includes omphalocele, exstrophy of cloaca, imperforate anus, and spinal defect. We report here autopsy findings in a case of OEIS complex, which apart from the major anomalies of the complex had bilateral club foot that is, congenital talipes equinovarus, right hydroureter, and body stalk anomaly. The umbilical cord was absent, and the umbilical vessels were embedded in an amniotic sheet, which connected the skin margin of the anterior body wall defect to the placenta, this feature being the hallmark of limb body wall complex (LBWC). This case further supports the view that OEIS and LBWC represent a continuous spectrum of abnormalities rather than separate conditions and may share a common etiology and pathogenetic mechanism as proposed by some authors.
PMCID: PMC4228575  PMID: 25400352
Body stalk anomaly; limb body wall complex; OEIS complex (omphalocele, exstrophy of cloaca, imperforate anus and spinal defect)
16.  First report of c. 1499G>C mutation in a 6-month-child with cystic fibrosis 
Indian Journal of Human Genetics  2014;20(2):199-202.
So far, more than 1800 mutations identified in the cystic fibrosis transmembrane conductance regulator (CFTR) gene. In this case report, we presented first report of c. 1499G>C mutation in a 6-month-old girl with cystic fibrosis (CF) diagnosis. A 6-month-old girl with weakness and meconium Ileus referred to the pediatric clinic in Ilam, in the west of Iran. Patient's skin was dark and suffered from bronchiectasis. The sweat test was performed, and the concentration of chloride and sodium in patient's sweat was 130-135 mmol/L and 125-128 mmol/L, respectively. The exon 10 mutation analysis of a CF patient was performed. CFTR mutation analysis revealed the identification of 2 mutations in patient, the mutations were p.F508del (ΔF508) and c. 1499G>C (cd500), respectively. The mutation c. 1499G>C (cd500) were found for the first time in the world. Assessing this mutation in future study and genetic investigation is recommended.
PMCID: PMC4228576  PMID: 25400353
c. 1499G>C; cystic fibrosis; cystic fibrosis transmembrane conductance regulator; direct sequencing; Iran; mutations
17.  Phenotypical characterization of 13q deletion syndrome: Report of two cases 
Indian Journal of Human Genetics  2014;20(2):203-205.
Patients with 13q deletion syndrome are characterized with different phenotypical features depending on the size and location of the deleted region on chromosome 13. These patients fall into three groups: In Group 1, deleted region is in the proximal and does not extend into q32; in Group 2, deleted region involves proximal to the q32 and in Group 3 q33-q34 is deleted. We present two cases with 13q syndrome with two different deleted region and different severity on clinical features: One case with interstitial deletion belongs to the Group 1 with mild mental retardation and minor malformations and the other case with terminal deletion belongs to Group 3 with moderate to severe mental retardation and major malformations.
PMCID: PMC4228577  PMID: 25400354
13q deletion syndrome; mental retardation; multiple anomalies
18.  Congenital anonychia and brachydactyly of the left foot - Cooks syndrome variant: Case report and review of literature 
Indian Journal of Human Genetics  2014;20(2):206-208.
Cooks syndrome is characterized by familial congenital anonychia or onychodystrophy, hypoplasia or absence of distal phalanges of the hands and feet with brachydactyly of the fifth finger and digitalization of the thumb (triphalangism). It is listed as a “rare disease” by the Office of Rare Diseases of the National Institutes of Health. Here, we report a case of congenital anonychia and brachydactyly of the left foot, which possibly is a variant of Cooks syndrome with a positive family history of similar deformity.
PMCID: PMC4228578  PMID: 25400355
Brachydactyly; congenital anonychia; Cooks syndrome; congenital anonychia; familial; rare disease
22.  Reactive metabolites and antioxidant gene polymorphisms in type 2 diabetes mellitus 
Type 2 diabetes mellitus (T2DM), by definition is a heterogeneous, multifactorial, polygenic syndrome which results from insulin receptor (IR) dysfunction. It is an outcome of oxidative stress caused by interactions of reactive metabolites (RMs) with lipids, proteins and other molecules of the human body. Production of RMs mainly superoxides (•O2−) has been found in a variety of predominating cellular enzyme systems including nicotinamide adenine dinucleotide phosphate oxidase, xanthine oxidase, cyclooxygenase, endothelial nitric oxide synthase (eNOS) and myeloperoxidase. The four main RM related molecular mechanisms are: increased polyol pathway flux; increased advanced glycation end-product formation; activation of protein kinase C isoforms and increased hexosamine pathway flux which have been implicated in glucose-mediated vascular damage. Superoxide dismutase, catalase, glutathione peroxidase, glutathione-S-transferase and NOS are antioxidant enzymes involved in scavenging RMs in normal individuals. Functional polymorphisms of these antioxidant enzymes have been reported to be involved in the pathogenesis of T2DM. The low levels of antioxidant enzymes or their non-functionality results in excessive RMs which initiates stress related pathways thereby leading to IR and T2DM. An attempt has been made to review the role of RMs and antioxidant enzymes in oxidative stress resulting in T2DM.
PMCID: PMC4065473  PMID: 24959009
Antioxidants; oxidative stress; polymorphisms; reactive metabolites; type 2 diabetes mellitus
23.  Neurotransmitters in alcoholism: A review of neurobiological and genetic studies 
Recent advances in the study of alcoholism have thrown light on the involvement of various neurotransmitters in the phenomenon of alcohol addiction. Various neurotransmitters have been implicated in alcohol addiction due to their imbalance in the brain, which could be either due to their excess activity or inhibition. This review paper aims to consolidate and to summarize some of the recent papers which have been published in this regard. The review paper will give an overview of the neurobiology of alcohol addiction, followed by detailed reviews of some of the recent papers published in the context of the genetics of alcohol addiction. Furthermore, the author hopes that the present text will be found useful to novices and experts alike in the field of neurotransmitters in alcoholism.
PMCID: PMC4065474  PMID: 24959010
γ-amino butyric acid; alcoholism; dopamine; glutamate; serotonin
24.  Pattern of chromosome involvement in childhood hyperdiploid pre-B-cell acute lymhoblastic leukemia cases from India 
Hyperdiploid pre-B-cell acute lymhoblastic leukemia (pre-B-ALL) is a common form of childhood leukemia with very good prognosis with present day chemotherapy. However, the chromosomal composition of the hyperdiploidy has not been extensively studied and possible mechanism for this pathology remains so far conjectural.
To analyze the pattern of chromosome involvement in a cohort of childhood hyperdiploid pre-B-ALL from India and from this pattern to develop an understanding on the causation of such pathology. Whether such patients also carry translocations and FLT3 mutations in addition to their hyperdiploid karyotype.
One hundred and twenty-six childhood pre-B-ALL patients were studied. Bone marrow aspirate of these patients were evacuated for morphology, FAB classification, immunophenotyping and both conventional and molecular cytogenetics.
Of 126 patients with pre-B-ALL (age 2-15 years), 90 patients with abnormal karyotype showed 50 with hyperdiploid karyotype (50/90 i.e. 55.5%). Chromosomes 9, 10, 14, 17, 18, 20 and 21 were more often involved in hyperdiploidy. Chromosome 21 duplication was present in 92% of the cases. Chromosomes 5, 15, 16, 17 and Y were less often involved (18-20%) in hyperdiploidy. About 44% of patients with hyperdiploidy had additional karyotypic abnormality of which TEL-AML1 was predominant (24%). Chromosome loss was rare and accounted for 20% of the cases only. We did not find any FLT3 mutation in our patients.
In this study, the pattern of chromosome involvement in hyperdiploid karyotype of ALL patients is same as other studies except some chromosomes like 1, 6, 11, 12, 19 and 22 have some more frequent involvement than other studies. This study also showed the occurrence of TEL/AML1 fusion is more (19.8%) than other reports from India.
PMCID: PMC4065475  PMID: 24959011
Abnormal mitosis; centrosome pathology; cytogenetics; hyperdiploidy; pre-B acute lymphoblastic leukemia; selective gain of chromosomes; uniparental disomy
25.  Association study of the ABCC8 gene variants with type 2 diabetes in south Indians 
The ABCC8 gene which encodes the sulfonylurea receptor plays a major role in insulin secretion and is a potential candidate for type 2 diabetes. The -3c → t (rs1799854) and Thr759Thr (C → T, rs1801261) single nucleotide polymorphisms (SNPs) of the ABCC8 gene have been associated with type 2 diabetes in many populations. The present study was designed to investigate the association of these two SNPs in an Asian Indian population from south India.
A total of 1,300 subjects, 663 normal glucose tolerant (NGT) and 637 type 2 diabetic subjects were randomly selected from the Chennai Urban Rural Epidemiology Study (CURES). The -3c → t and Thr759Thr were genotyped in these subjects using polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) and a few variants were confirmed by direct sequencing.
The frequency of the ‘t’ allele of the -3c → t SNP was found to be 0.27 in NGT and 0.29 in type 2 diabetic subjects (P = 0.44). There was no significant difference in the genotypic frequency between the NGT and type 2 diabetic group (P = 0.18). Neither the genotypic frequency nor the allele frequency of the Thr759Thr polymorphism was found to differ significantly between the NGT and type 2 diabetic groups.
The -3c → t and the Thr759Thr polymorphisms of the ABCC8 gene were not associated with type 2 diabetes in this study. However, an effect of these genetic variants on specific unidentified sub groups of type 2 diabetes cannot be excluded.
PMCID: PMC4065476  PMID: 24959012
ABCC8 gene; south Indians; sulfonylurea receptor; type 2 diabetes

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