9-127497299-TC-GA

Variant names:

• chr9-127497299-TC-GA
• NM_001005373.4:c.1877_1878delTCinsGA
• LRSAM1 p.Val626Gly

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 0P and 0B.

The NM_001005373.4(LRSAM1):​c.1877_1878delTCinsGA​(p.Val626Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. It is difficult to determine the true allele frequency of this variant because it is of type MNV, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar. Synonymous variant affecting the same amino acid position (i.e. V626V) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: LRSAM1 NM_001005373.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.569
• Publications: 0 publications found

Genes affected

LRSAM1 (HGNC:25135): (leucine rich repeat and sterile alpha motif containing 1) This gene encodes a ring finger protein involved in a variety of functions, including regulation of signaling pathways and cell adhesion, mediation of self-ubiquitylation, and involvement in cargo sorting during receptor endocytosis. Mutations in this gene have been associated with Charcot-Marie-Tooth disease. Multiple transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jan 2012]

LRSAM1 Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease axonal type 2P

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001005373.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRSAM1	NM_001005373.4	MANE Select	c.1877_1878delTCinsGA	p.Val626Gly	missense	N/A	NP_001005373.1	Q6UWE0-1
	LRSAM1	NM_001005374.4		c.1877_1878delTCinsGA	p.Val626Gly	missense	N/A	NP_001005374.1	Q6UWE0-1
	LRSAM1	NM_001384142.1		c.1877_1878delTCinsGA	p.Val626Gly	missense	N/A	NP_001371071.1	Q6UWE0-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	LRSAM1	ENST00000300417.11	TSL:1 MANE Select	c.1877_1878delTCinsGA	p.Val626Gly	missense	N/A	ENSP00000300417.6	Q6UWE0-1
	LRSAM1	ENST00000373322.1	TSL:1	c.1877_1878delTCinsGA	p.Val626Gly	missense	N/A	ENSP00000362419.1	Q6UWE0-1
	LRSAM1	ENST00000870574.1		c.2033_2034delTCinsGA	p.Val678Gly	missense	N/A	ENSP00000540633.1

Frequencies

GnomAD3 genomes Cov.: 33

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.57

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr9-130259578;