17-10392303-C-T

Variant names:

• chr17-10392303-C-T
• rs74634722
• NM_002472.3:c.5568+239G>A

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_002472.3(MYH8):​c.5568+239G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0198 in 146,912 control chromosomes in the GnomAD database, including 78 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.020 (78 hom., cov: 32)
• Consequence: MYH8 NM_002472.3 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.301
• Publications: 0 publications found

Genes affected

MYH8 (HGNC:7578): (myosin heavy chain 8) Myosins are actin-based motor proteins that function in the generation of mechanical force in eukaryotic cells. Muscle myosins are heterohexamers composed of 2 myosin heavy chains and 2 pairs of nonidentical myosin light chains. This gene encodes a member of the class II or conventional myosin heavy chains, and functions in skeletal muscle contraction. This gene is predominantly expressed in fetal skeletal muscle. This gene is found in a cluster of myosin heavy chain genes on chromosome 17. A mutation in this gene results in trismus-pseudocamptodactyly syndrome. [provided by RefSeq, Sep 2009]

MYHAS (HGNC:50609): (myosin heavy chain gene cluster antisense RNA) Predicted to enable primary miRNA binding activity. Predicted to be involved in response to muscle activity and skeletal muscle fiber development. Predicted to act upstream of or within with a positive effect on gene expression. Predicted to be located in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.85).
• BP6: Variant 17-10392303-C-T is Benign according to our data. Variant chr17-10392303-C-T is described in ClinVar as [Benign]. Clinvar id is 1266347.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0724 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYH8	NM_002472.3	c.5568+239G>A		intron_variant	Intron 38 of 39	ENST00000403437.2	NP_002463.2
MYHAS	NR_125367.1	n.76+9096C>T		intron_variant	Intron 1 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYH8	ENST00000403437.2	c.5568+239G>A		intron_variant	Intron 38 of 39	5	NM_002472.3	ENSP00000384330.2

Frequencies

GnomAD3 genomes AF: 0.0197 AC: 2891 AN: 146798 Hom.: 76 Cov.: 32

Gnomad AFR AF: 0.0746

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00665

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000280

Gnomad OTH AF: 0.0134

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

GnomAD4 genome AF: 0.0198 AC: 2904 AN: 146912 Hom.: 78 Cov.: 32 AF XY: 0.0192 AC XY: 1380 AN XY: 71990

African (AFR) AF: 0.0747 AC: 2758 AN: 36918

American (AMR) AF: 0.00664 AC: 100 AN: 15060

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3448

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4722

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10606

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 272

European-Non Finnish (NFE) AF: 0.000280 AC: 19 AN: 67768

Other (OTH) AF: 0.0132 AC: 27 AN: 2042

Alfa AF: 0.0234 Hom.: 21

Bravo AF: 0.0223

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Dec 08, 2019

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.85
CADD	Benign	0.78
DANN	Benign	0.38
PhyloP100		-0.30
Mutation Taster		=100/0	polymorphism

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

Other links and lift over

dbSNP: rs74634722; hg19: chr17-10295620;