IthaID: 2650

Context nucleotide sequence:
CCAGGGCATCAAGCTCTTCCCTGGC [C/T] GGCTGACCCTGCCTCAGCCCTAGTC (Strand: +)

Also known as: -786T>C, T786C

Comments: The eNOS −786T>C polymorphism is associated with reduced endothelial nitric oxide synthesis. The C-786 allele associated with an upregulation of the adhesion molecule VCAM-1, as well as with upper respiratory tract infection in patients with sickle cell disease (SCD) from Northeast Brazil [PMID: 27486304]. It associated with increased susceptibility to acute chest syndrome (ACS) in African-American females with SCD (16-71 years old) [PMID: 14687036]. This association was not replicated in an independent African-American SCD cohort comprised mainly of pediatric patients [PMID: 17351927], while it associated with a decreased risk of ACS in pediatric SCD patients from Guadeloupe [PMID: 16956834]. It associated with occurence of ACS in Egyptian SCD patients [PMID: 26903375]. SNP associated with age onset of menarche in females with SCD from India [PMID: 23795274]. SNP (T allele) associated with lower bilirubin levels in a Portuguese cohort of SCD patients of Sub-Saharan ancestry [PMID: 24168396]. SNP (C allele) associated with retinopathy in Greek patients with severe clinical course of SCD [PMID: 27871907]. SNP (TT genotype) associated with an increased reticulocyte count and high serum lactate dehydrogenase levels in pediatric SCA patients from Portugal [PMID: 27802215].

We follow the HGVS sequence variant nomenclature and IUPAC standards.

Heterozygous records (preview in IthaPhen)

1. Sharan K, Surrey S, Ballas S, Borowski M, Devoto M, Wang KF, Sandler E, Keller M, Association of T-786C eNOS gene polymorphism with increased susceptibility to acute chest syndrome in females with sickle cell disease., Br. J. Haematol. , 124(2), 240-3, 2004
2. Chaar V, Tarer V, Etienne-Julan M, Diara JP, Elion J, Romana M, ET-1 and ecNOS gene polymorphisms andsusceptibility to acute chest syndrome and painful vaso-occlusive crises in children with sickle cell anemia., Haematologica , 91(9), 1277-8, 2006
3. Duckworth L, Hsu L, Feng H, Wang J, Sylvester JE, Kissoon N, Sandler E, Lima JJ, Physician-diagnosed asthma and acute chest syndrome: associations with NOS polymorphisms., Pediatr. Pulmonol. , 42(4), 332-8, 2007
4. Nishank SS, Endothelial Nitric Oxide Synthase (eNOS) Gene Polymorphism is Associated with Age Onset of Menarche in Sickle Cell Disease Females of India., Mediterr J Hematol Infect Dis , 5(1), e2013036, 2013
5. Coelho A, Dias A, Morais A, Nunes B, Ferreira E, Picanço I, Faustino P, Lavinha J, Genetic variation in CD36, HBA, NOS3 and VCAM1 is associated with chronic haemolysis level in sickle cell anaemia: a longitudinal study., Eur. J. Haematol. , 92(3), 237-43, 2014
6. Vilas-Boas W, Figueiredo CV, Pitanga TN, Carvalho MO, Santiago RP, Santana SS, Guarda CC, Zanette AM, Cerqueira BA, Gonçalves MS, Endothelial Nitric Oxide Synthase (-786T>C) and Endothelin-1 (5665G>T) Gene Polymorphisms as Vascular Dysfunction Risk Factors in Sickle Cell Anemia., Gene Regul Syst Bio , 10(0), 67-72, 2016
7. Yousry SM, Ellithy HN, Shahin GH, Endothelial nitric oxide synthase gene polymorphisms and the risk of vasculopathy in sickle cell disease., Hematology , 21(6), 359-67, 2016
8. Aguiar L, Matos A, Gil Â, Afonso C, Braga L, João L, Kjollerstrom P, Faustino P, Bicho M, Inácio Â, Sickle cell anemia - Nitric oxide related genetic modifiers of hematological and biochemical parameters., Clin. Hemorheol. Microcirc. , 2016
9. Armenis I, Kalotychou V, Tzanetea R, Kollia P, Kontogeorgiou Z, Anastasopoulou D, Mantzourani M, Samarkos M, Pantos K, Konstantopoulos K, Rombos I, Prognostic value of T786C and G894T eNOS polymorphisms in sickle cell disease., Nitric Oxide , 62(0), 17-23, 2017