9-34635591-CGCTCCTGTCTATCCGCAGGTCTTCCTTCAGGCCTGGCTGGTCAAGGGTCCTGGCCAAAGAGGTAGGTGGTGAGCTCAAGCCGGAGGCCCCGAGCATAGGAGCGAAGAGTATAGAAGAGGGTGAGGAAGTCCTGGGTGCTGAAGACAGTGTCGGCCAGCGCGAAGGCCAGGGTGGATGGGATGACGCCCCGGCCGTACTCCACCATCCATGTGTTTGGCCCCCACTCCACAGCTGTTGCCTCACCAGGCCCGTGTACTACCGTCTCCCCTGGGGGACAGGGAGCACCCAAGTG-C

Position:

• chr9-34635591-CGCTCCTGTCTATCCGCAGGTCTTCCTTCAGGCCTGGCTGGTCAAGGGTCCTGGCCAAAGAGGTAGGTGGTGAGCTCAAGCCGGAGGCCCCGAGCATAGGAGCGAAGAGTATAGAAGAGGGTGAGGAAGTCCTGGGTGCTGAAGACAGTGTCGGCCAGCGCGAAGGCCAGGGTGGATGGGATGACGCCCCGGCCGTACTCCACCATCCATGTGTTTGGCCCCCACTCCACAGCTGTTGCCTCACCAGGCCCGTGTACTACCGTCTCCCCTGGGGGACAGGGAGCACCCAAGTG-C

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_Strong PM2 PP5_Moderate

The NM_005866.4(SIGMAR1):​c.446-25_*40del variant causes a splice acceptor, coding sequence, 3 prime UTR, intron 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 Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: SIGMAR1 NM_005866.4 splice_acceptor, coding_sequence, 3_prime_UTR, intron
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 2.30

Genes affected

SIGMAR1 (HGNC:8157): (sigma non-opioid intracellular receptor 1) This gene encodes a receptor protein that interacts with a variety of psychotomimetic drugs, including cocaine and amphetamines. The receptor is believed to play an important role in the cellular functions of various tissues associated with the endocrine, immune, and nervous systems. As indicated by its previous name, opioid receptor sigma 1 (OPRS1), the product of this gene was erroneously thought to function as an opioid receptor; it is now thought to be a non-opioid receptor. Mutations in this gene has been associated with juvenile amyotrophic lateral sclerosis 16. Alternative splicing of this gene results in transcript variants encoding distinct isoforms. [provided by RefSeq, Aug 2013]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 1.6904762 fraction of the gene.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 9-34635591-CGCTCCTGTCTATCCGCAGGTCTTCCTTCAGGCCTGGCTGGTCAAGGGTCCTGGCCAAAGAGGTAGGTGGTGAGCTCAAGCCGGAGGCCCCGAGCATAGGAGCGAAGAGTATAGAAGAGGGTGAGGAAGTCCTGGGTGCTGAAGACAGTGTCGGCCAGCGCGAAGGCCAGGGTGGATGGGATGACGCCCCGGCCGTACTCCACCATCCATGTGTTTGGCCCCCACTCCACAGCTGTTGCCTCACCAGGCCCGTGTACTACCGTCTCCCCTGGGGGACAGGGAGCACCCAAGTG-C is Pathogenic according to our data. Variant chr9-34635591-CGCTCCTGTCTATCCGCAGGTCTTCCTTCAGGCCTGGCTGGTCAAGGGTCCTGGCCAAAGAGGTAGGTGGTGAGCTCAAGCCGGAGGCCCCGAGCATAGGAGCGAAGAGTATAGAAGAGGGTGAGGAAGTCCTGGGTGCTGAAGACAGTGTCGGCCAGCGCGAAGGCCAGGGTGGATGGGATGACGCCCCGGCCGTACTCCACCATCCATGTGTTTGGCCCCCACTCCACAGCTGTTGCCTCACCAGGCCCGTGTACTACCGTCTCCCCTGGGGGACAGGGAGCACCCAAGTG-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 431074.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SIGMAR1	NM_005866.4	c.446-25_*40del		splice_acceptor_variant, coding_sequence_variant, 3_prime_UTR_variant, intron_variant	4/4	ENST00000277010.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SIGMAR1	ENST00000277010.9	c.446-25_*40del		splice_acceptor_variant, coding_sequence_variant, 3_prime_UTR_variant, intron_variant	4/4	1	NM_005866.4	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: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Amyotrophic lateral sclerosis type 16 Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

NeuroMeGen, Hospital Clinico Santiago de Compostela

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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: rs1554707622; hg19: chr9-34635588;