chr9-127502809-CTGCTGCCAGCAG-C
Variant summary
Our verdict is Pathogenic. Variant got 14 ACMG points: 14P and 0B. PM1PM2PM4PP5_Very_Strong
The NM_001005373.4(LRSAM1):c.2093_2104delAGTGCTGCCAGC(p.Gln698_Gln701del) variant causes a disruptive inframe deletion change. The variant allele was found at a frequency of 0.00000186 in 1,611,934 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (★★).
Frequency
Consequence
NM_001005373.4 disruptive_inframe_deletion
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Pathogenic. Variant got 14 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
LRSAM1 | NM_001005373.4 | c.2093_2104delAGTGCTGCCAGC | p.Gln698_Gln701del | disruptive_inframe_deletion | Exon 26 of 26 | ENST00000300417.11 | NP_001005373.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152148Hom.: 0 Cov.: 31
GnomAD4 exome AF: 0.00000137 AC: 2AN: 1459786Hom.: 0 AF XY: 0.00000275 AC XY: 2AN XY: 726220
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152148Hom.: 0 Cov.: 31 AF XY: 0.0000135 AC XY: 1AN XY: 74338
ClinVar
Submissions by phenotype
Charcot-Marie-Tooth disease axonal type 2P Pathogenic:2
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This variant, c.2093_2104del, results in the deletion of 4 amino acid(s) of the LRSAM1 protein (p.Gln698_Gln701del), but otherwise preserves the integrity of the reading frame. This variant is not present in population databases (gnomAD no frequency). This variant has been observed in individuals with autosomal dominant Charcot-Marie-Tooth disease (PMID: 30996334). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 472799). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. For these reasons, this variant has been classified as Pathogenic. -
Inborn genetic diseases Pathogenic:1
The c.2093_2104del12 pathogenic mutation (also known as p.Q698_Q701del) is located in coding exon 24 of the LRSAM1 gene. This variant results from an in-frame AGTGCTGCCAGC deletion at nucleotide positions 2093 to 2104. This results in the in-frame deletion of QCCQ from codons 698 to 701. This alteration was detected in the heterozygous state in multiple individuals with autosomal dominant Charcot-Marie-Tooth disease 2, and it was found to segregate with disease in multiple families originating from western and southwestern France (Peretti A et al. Eur J Hum Genet, 2019 09;27:1406-1418). This amino acid region is well conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis (Choi Y et al. PLoS ONE. 2012; 7(10):e46688). This variant is considered to be rare based on population cohorts in the Genome Aggregation Database (gnomAD). Based on the supporting evidence, this variant is expected to be causative of autosomal dominant Charcot-Marie-Tooth disease, type 2P (CMT2P); however, its clinical significance for autosomal recessive CMT2P is unclear. -
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at