rs371774856
Variant summary
Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4
The NM_005050.4(ABCD4):c.352C>T(p.His118Tyr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000991 in 1,613,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H118L) has been classified as Uncertain significance.
Frequency
Consequence
NM_005050.4 missense
Scores
Clinical Significance
Conservation
Publications
- methylmalonic acidemia with homocystinuria, type cblJInheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P, Orphanet, Ambry Genetics
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ACMG classification
Our verdict: Uncertain_significance. The variant received 1 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| ABCD4 | NM_005050.4 | c.352C>T | p.His118Tyr | missense_variant | Exon 4 of 19 | ENST00000356924.9 | NP_005041.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000131 AC: 2AN: 152166Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000120 AC: 3AN: 250880 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.00000958 AC: 14AN: 1461696Hom.: 0 Cov.: 31 AF XY: 0.0000124 AC XY: 9AN XY: 727146 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.0000131 AC: 2AN: 152166Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74338 show subpopulations
ClinVar
Submissions by phenotype
Methylmalonic acidemia with homocystinuria, type cblJ Uncertain:1
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. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The tyrosine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with ABCD4-related disease. This variant is present in population databases (rs371774856, ExAC 0.006%). This sequence change replaces histidine with tyrosine at codon 118 of the ABCD4 protein (p.His118Tyr). The histidine residue is moderately conserved and there is a moderate physicochemical difference between histidine and tyrosine. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at