chr1-150509553-GC-TT

Position:

• chr1-150509553-GC-TT

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_Strong PM2

The NM_004425.4(ECM1):​c.93_94delinsTT​(p.Arg31_Gln32delinsSerTer) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as not provided (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ECM1 NM_004425.4 stop_gained
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: 0.842

Genes affected

ECM1 (HGNC:3153): (extracellular matrix protein 1) This gene encodes a soluble protein that is involved in endochondral bone formation, angiogenesis, and tumor biology. It also interacts with a variety of extracellular and structural proteins, contributing to the maintenance of skin integrity and homeostasis. Mutations in this gene are associated with lipoid proteinosis disorder (also known as hyalinosis cutis et mucosae or Urbach-Wiethe disease) that is characterized by generalized thickening of skin, mucosae and certain viscera. Alternatively spliced transcript variants encoding distinct isoforms have been described for this gene. [provided by RefSeq, Feb 2011]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant located near the start codon (<100nt), not predicted to undergo nonsense mediated mRNA decay. There are 14 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ECM1	NM_004425.4	c.93_94delinsTT	p.Arg31_Gln32delinsSerTer	stop_gained	2/10	ENST00000369047.9
ECM1	NM_001202858.2	c.93_94delinsTT	p.Arg31_Gln32delinsSerTer	stop_gained	2/10
ECM1	NM_022664.3	c.93_94delinsTT	p.Arg31_Gln32delinsSerTer	stop_gained	2/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ECM1	ENST00000369047.9	c.93_94delinsTT	p.Arg31_Gln32delinsSerTer	stop_gained	2/10	1	NM_004425.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

Lipid proteinosis Other:1

not provided, no classification provided

literature only

GeneReviews

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Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs869025567; hg19: chr1-150482029;