TTR V122I allele in Afro-Caribbeans and Cardiovascular Disease V1.2

  • Research type

    Research Study

  • Full title

    A study to determine the gene frequency of TTR V122I allele in Afro-Caribbean Patients with Cardiovascular Disease

  • IRAS ID

    149451

  • Contact name

    Lisa Anderson

  • Contact email

    lisa.anderson@stgeorges.nhs.uk

  • Sponsor organisation

    St George's University of London

  • Duration of Study in the UK

    2 years, 0 months, 1 days

  • Research summary

    Biopsy confirmed TTR V122I cardiac amyloid is the underlying cause for heart failure in 10% of the Afro-Caribbean heart failure population at St George's Hospital and at least 6% of the newly diagnosed heart failure patients at King's Hospital.
    In 1996, an epidemiological study demonstrated the V122I allele in 65 of 1688 Black Americans, giving a calculated allele carrier rate of 3.9% in the United States, yet the clinical implication of this finding was not known at the time. The allele was later detected in 10.3% of an African-American cohort over 60 years of age taking part in a large heart failure trial. Despite extensive screening of other populations, this mutation is almost exclusively present in persons of African ancestry.
    The aim of this study is to establish the frequency of the TTR V122I allele in Afro-Caribbean patients with cardiovascular disease and compare it with that of the healthy Afro-Caribbean population. Our hypothesis is that TTR V122I carrier frequency is higher in the disease cohorts outlined and that it is, in fact, a risk allele predicting cardiovascular disease.

  • REC name

    London - Queen Square Research Ethics Committee

  • REC reference

    15/LO/0442

  • Date of REC Opinion

    26 May 2015

  • REC opinion

    Further Information Favourable Opinion