ClinVar Miner

Submissions for variant NM_000518.4(HBB):c.184A>G (p.Lys62Glu) (rs33995148)

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Total submissions: 2
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Submitter RCV SCV Clinical significance Condition Last evaluated Review status Method Comment
ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories RCV000507840 SCV000603946 uncertain significance not provided 2017-06-27 criteria provided, single submitter clinical testing The Hb N-Seattle variant (HBB: c.184A>G, Lys61Glu) (rs33995148) has been reported in a heterozygous blood donor with normal clinical presentation. However, its phenotype when found with other pathogenic globin variants is uncertain. The Hb N-Seattle hemoglobin variant is stable, and comprises half of the total hemoglobin in the individual (HbVar database and references therein). It is listed in ClinVar (Variation ID: 15280), but not observed in the general population databases (1000 Genomes Project, Exome Variant Server, Genome Aggregation Database). The lysine at residue 61 is moderately conserved, and computation algorithms (Align GV/GD, Mutation Taster, PolyPhen-2, SIFT) are inconclusive on its impact on the protein. Although Hb N-Seattle has not been associated with clinical symptoms or hemoglobin abnormalities, there is insufficient information to determine its clinical significance with certainty. References: Link to HbVar database for Hb N-Seattle:
OMIM RCV000016510 SCV000036778 other HEMOGLOBIN N (SEATTLE) 2017-12-12 no assertion criteria provided literature only

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