The genomic dna sample was sent to grifols ih center for bi-directional sequencing.Sequencing interrogated rh gene exons 1 to 10 and the allele genotype rhce*ce, rhce*ce(ivs3+1a) was identified.Rhce*ce(ivs3+1a) variant allele encodes a rh null phenotype.It was first published as abstract (2014 transfusion vol.54 suppl.,sp232) and then as a manuscript (2018 transfusion vol.58 p.3031).Id core xt reported a predicted c+ phenotype, but null rhce*ce(ivs3+1a) variant allele, not interrogated by id core xt, is associated with a c- phenotype.This false positive result obtained by id core xt is considered a discrepant result and then a malfunction.This case report is covered by limitations number 1 and 8 of id core xt package insert.
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