9-35682350-G-T

Variant names:

• chr9-35682350-G-T
• ENST00000378292.9:c.773-187C>A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_213674.1(TPM2):​c.773-187C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000126 in 795,644 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000013 (0 hom.)
• Consequence: TPM2 NM_213674.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.36

Genes affected

TPM2 (HGNC:12011): (tropomyosin 2) This gene encodes beta-tropomyosin, a member of the actin filament binding protein family, and mainly expressed in slow, type 1 muscle fibers. Mutations in this gene can alter the expression of other sarcomeric tropomyosin proteins, and cause cap disease, nemaline myopathy and distal arthrogryposis syndromes. Alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Mar 2009]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TPM2	NM_001301226.2	c.773-187C>A		intron_variant	Intron 8 of 8		NP_001288155.1
TPM2	NM_213674.1	c.773-187C>A		intron_variant	Intron 8 of 8		NP_998839.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TPM2	ENST00000378292.9	c.773-187C>A		intron_variant	Intron 8 of 8	1		ENSP00000367542.3
TPM2	ENST00000644325	c.*358C>A		3_prime_UTR_variant	Exon 4 of 4			ENSP00000495075.1
TPM2	ENST00000329305.6	c.773-187C>A		intron_variant	Intron 8 of 8	2		ENSP00000367541.1
TPM2	ENST00000643485.1	n.1499C>A		non_coding_transcript_exon_variant	Exon 8 of 8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000126 AC: 1 AN: 795644 Hom.: 0 Cov.: 11 AF XY: 0.00000246 AC XY: 1 AN XY: 406440

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000179

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	0.045
DANN	Benign	0.59

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-35682347;