1-23804451-G-C
Variant summary
Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM1PM2PP3_StrongPP5
The NM_000191.3(HMGCL):c.825C>G(p.Asn275Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. N275S) has been classified as Uncertain significance.
Frequency
Consequence
NM_000191.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_pathogenic. Variant got 9 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
HMGCL | NM_000191.3 | c.825C>G | p.Asn275Lys | missense_variant | 8/9 | ENST00000374490.8 | |
HMGCL | NM_001166059.2 | c.612C>G | p.Asn204Lys | missense_variant | 6/7 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
HMGCL | ENST00000374490.8 | c.825C>G | p.Asn275Lys | missense_variant | 8/9 | 1 | NM_000191.3 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD4 exome Cov.: 31
GnomAD4 genome ? Cov.: 32
ClinVar
Submissions by phenotype
Deficiency of hydroxymethylglutaryl-CoA lyase Pathogenic:1Uncertain:1
Likely pathogenic, criteria provided, single submitter | clinical testing | Neuberg Centre For Genomic Medicine, NCGM | - | The HMGCL (c.825C>G) (p.Asn275Lys) variant has been reported as one of the double heterozygous (c.109G>T (p.Glu37*) variant in an individual affected with HMG-CoA lyase deficiency (Puisac B et. al., 2013). The p.Asn275Lys variant is novel (not in any individuals) in gnomAD Exomes and 1000 Genomes. It has been submitted to ClinVar with as Variant of Uncertain Significance (VUS) but no details are available for independent assessment. The amino acid Asn at position 275 is changed to a Lys changing protein sequence and it might alter its composition and physico-chemical properties. The variant is predicted to be probably damaging by PolyPhen 2 and deleterious by SIFT. For these reasons, this variant has been classified as Likely Pathogenic. In the absence of another reportable variant the molecular diagnosis is not confirmed. - |
Uncertain significance, criteria provided, single submitter | clinical testing | Counsyl | Feb 14, 2018 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at