2-170214451-A-G

Variant names:

• chr2-170214451-A-G
• rs754301736
• NM_138995.5:c.394A>G

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_Strong BP6_Moderate

The NM_138995.5(MYO3B):​c.394A>G​(p.Met132Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000142 in 1,614,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.000039 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: MYO3B NM_138995.5 missense
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.612
• Publications: 0 publications found

Genes affected

MYO3B (HGNC:15576): (myosin IIIB) This gene encodes one of the class III myosins. Myosins are ATPases, activated by actin, that move along actin filaments in the cell. This class of myosins are characterized by an amino-terminal kinase domain and shown to be present in photoreceptors. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Mar 2014]

ENSG00000308085 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -6 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.030327529).
• BP6: Variant 2-170214451-A-G is Benign according to our data. Variant chr2-170214451-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 2591839.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO3B	NM_138995.5	c.394A>G	p.Met132Val	missense_variant	Exon 4 of 35	ENST00000408978.9	NP_620482.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MYO3B	ENST00000408978.9	c.394A>G	p.Met132Val	missense_variant	Exon 4 of 35	1	NM_138995.5	ENSP00000386213.4

Frequencies

GnomAD3 genomes AF: 0.0000394 AC: 6 AN: 152214 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000327

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000160 AC: 4 AN: 249506 AF XY: 0.0000148

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000579

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000330

GnomAD4 exome AF: 0.0000116 AC: 17 AN: 1461846 Hom.: 0 Cov.: 33 AF XY: 0.0000124 AC XY: 9 AN XY: 727228

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.000179 AC: 8 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.000173 AC: 1 AN: 5768

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111980

Other (OTH) AF: 0.0000662 AC: 4 AN: 60394

GnomAD4 genome AF: 0.0000394 AC: 6 AN: 152214 Hom.: 0 Cov.: 32 AF XY: 0.0000403 AC XY: 3 AN XY: 74358

African (AFR) AF: 0.00 AC: 0 AN: 41454

American (AMR) AF: 0.000327 AC: 5 AN: 15274

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5202

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10612

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68044

Other (OTH) AF: 0.00 AC: 0 AN: 2094

Alfa AF: 0.0000434 Hom.: 0

Bravo AF: 0.000166

ExAC AF: 0.0000248 AC: 3

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Jun 22, 2023

Ambry Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.058
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	0.23
DANN	Benign	0.61
DEOGEN2	Benign	0.015	.;T;T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.0051	N
LIST_S2	Benign	0.81	T;T;T
M_CAP	Benign	0.020	T
MetaRNN	Benign	0.030	T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.10	N;N;.
PhyloP100		-0.61
PrimateAI	Benign	0.31	T
PROVEAN	Benign	0.45	N;N;N
REVEL	Benign	0.20
Sift	Benign	0.95	T;T;T
Sift4G	Benign	0.84	.;.;T
Polyphen		0.0	B;B;.
Vest4		0.26
MutPred		0.57		Loss of catalytic residue at M132 (P = 0.067);Loss of catalytic residue at M132 (P = 0.067);.;
MVP		0.33
MPC		0.076
ClinPred		0.018	T
GERP RS		-11
Varity_R		0.078
gMVP		0.28
Mutation Taster		=89/11	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: rs754301736; hg19: chr2-171070961;