SLC14A1 gene sequencing shows the JK*01W.06 allele in a JK1 patient with an anti-JK1.
(2024) Hematology, Transfusion and Cell Therapy — Vol. 46, n° Suppl 5, p. S278-S283 (2024)
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Degosserie, Jonathan 
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- (en) INTRODUCTION : The Kidd system (e.g. JK; ISBT009) is the ninth blood group system, which was identified between 1951 and 1959 following a case of hemolytic disease of a newborn (JK1 in 1951) and hemolytic reactions after blood transfusions (JK2 in 1953 and JK:−1,−2 in 1959) by Allen et al. Plaut et al. and Pinkerton et al. respectively. The JK gene (SLC14A1 or HUT11 or UT-B1) is located on chromosome 18q11–q12 with 10 exons, exons 4–10 of which are responsible for encoding the mature protein. It functions as a urea transporter on erythrocytes as well as on endothelial cells of the vasa recta, protecting the erythrocytes from osmotic lysis and allowing urine concentration in the kidneys. The Kidd system includes three antigens (JK1, JK2 and JK3); JK1 and JK2 are antithetic, JK3 is always present when JK1 and/or JK2 are/is present. This system leads to four RBC phenotypes (JK:1,−2; JK:1,2; JK:−1,2 and, more rarely, JK:−1,−2). [...]
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Soleimani, R., Cabo, J., Frélik, A., Debry, C., Mbende, C., Delcourt, J., Debortoli, N., Renguet, E., Devey, A., Mullier, F., Degosserie, J., & Moreno Y Banuls, L. (2024). SLC14A1 gene sequencing shows the JK*01W.06 allele in a JK1 patient with an anti-JK1. Hematology, Transfusion and Cell Therapy, 46(Suppl 5), S278-S283. https://doi.org/10.1016/j.htct.2023.10.004 (Original work published 2024)