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Struggle of a senior citizen to find blood for transfusion led to discovery of an extremely rare blood type in India – The EMM blood group

Published:October 26, 2022DOI:https://doi.org/10.1016/j.transci.2022.103584
      India's first and world's 11th recorded case of individual with Emm negative blood type was discovered relatively recently when a 65-year-old man, hailing from Gujarat, couldn't seem to find his blood match [

      The Times of India. Researchers report India's first Emm negative blood type case, world's 11th. Published July 15 2022. Available at: 〈https://timesofindia.indiatimes.com/home/education/news/researchers-report-indias-first-Emm-negative-blood-type-case-worlds-11th/articleshow/92889786.cms〉. Accessed 18 July 2022.

      ]. As of February 2021, the International Society of Blood Transfusion (ISBT), has identified 43 blood group systems [
      • Campeau P.M.
      Free GPI is the elusive Emm antigen. Blood.
      ]. The Emm system (ISBT042), after being classified for ages under the "901" series of high incidence blood antigens, now belongs to the 42nd blood group system with its corresponding antigen being assigned the number 901008 [

      The Times of India. Researchers report India's first Emm negative blood type case, world's 11th. Published July 15 2022. Available at: 〈https://timesofindia.indiatimes.com/home/education/news/researchers-report-indias-first-Emm-negative-blood-type-case-worlds-11th/articleshow/92889786.cms〉. Accessed 18 July 2022.

      ,
      • Campeau P.M.
      Free GPI is the elusive Emm antigen.
      ]. The world's first-ever case of anti-Emm dates back to 1986, as reported by a study in 3 unrelated individuals [
      • Campeau P.M.
      Free GPI is the elusive Emm antigen. Blood.
      ]. One of the three patients suffered from a neurological disorder and was anti-Emm antibody positive while another one had a brother who was also Emm negative and carried anti-Emm antibody [
      • Lane W.J.
      • Aeschlimann J.
      • Vege S.
      • Lomas-Francis C.
      • Burgos A.
      • Mah H.H.
      • et al.
      PIGG defines the Emm blood group system.
      ].
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      References

      1. The Times of India. Researchers report India's first Emm negative blood type case, world's 11th. Published July 15 2022. Available at: 〈https://timesofindia.indiatimes.com/home/education/news/researchers-report-indias-first-Emm-negative-blood-type-case-worlds-11th/articleshow/92889786.cms〉. Accessed 18 July 2022.

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