Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting
The NM_001376013.1(EPB41):c.532G>A(p.Glu178Lys) variant causes a missense change. The variant allele was found at a frequency of 0.00000991 in 1,613,732 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
EPB41 (HGNC:3377): (erythrocyte membrane protein band 4.1) The protein encoded by this gene, together with spectrin and actin, constitute the red cell membrane cytoskeletal network. This complex plays a critical role in erythrocyte shape and deformability. Mutations in this gene are associated with type 1 elliptocytosis (EL1). Alternatively spliced transcript variants encoding different isoforms have been described for this gene.[provided by RefSeq, Oct 2009]
Verdict is Likely_benign. Variant got -1 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.15382996).
BS1
Variant frequency is greater than expected in population eas. gnomad4_exome allele frequency = 0.00000958 (14/1461576) while in subpopulation EAS AF= 0.000126 (5/39674). AF 95% confidence interval is 0.0000491. There are 0 homozygotes in gnomad4_exome. There are 10 alleles in male gnomad4_exome subpopulation. Median coverage is 31. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
Review Status: criteria provided, single submitter
Collection Method: clinical testing
The EPB41 gene has multiple clinically relevant transcripts. This variant occurs in alternate transcript NM_001166005.1, and corresponds to NM_004437.3:c.-96G>A in the primary transcript. This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 178 of the EPB41 protein (p.Glu178Lys). This variant is present in population databases (rs766257622, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with EPB41-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);Gain of methylation at E178 (P = 0.0031);