Genetic Variant MYO9A:p.Leu2426Ser (chr15-71826950-A-G) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_006901.4(MYO9A):c.7277T>C(p.Leu2426Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,613,956 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

MYO9A
NM_006901.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.48

Variant links:

Genes affected

MYO9A (HGNC:7608): (myosin IXA) This gene encodes a member of the myosin superfamily. The protein represents an unconventional myosin; it should not be confused with the conventional non-muscle myosin-9 (MYH9). Unconventional myosins contain the basic domains of conventional myosins and are further distinguished from class members by their tail domains. They function as actin-based molecular motors. Mutations in this gene have been associated with Bardet-Biedl Syndrome. [provided by RefSeq, Dec 2011]

MYO9A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09374899).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MYO9A	NM_006901.4 link	c.7277T>C	p.Leu2426Ser	missense_variant	Exon 42 of 42	ENST00000356056.10	NP_008832.2	B2RTY4-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MYO9A	ENST00000356056.10 link	c.7277T>C	p.Leu2426Ser	missense_variant	Exon 42 of 42	1	NM_006901.4	ENSP00000348349.5	B2RTY4-1
MYO9A	ENST00000561618.5 link	c.3824T>C	p.Leu1275Ser	missense_variant	Exon 19 of 19	1		ENSP00000457945.1	H3BV44
MYO9A	ENST00000564571 link	c.*82T>C		3_prime_UTR_variant	Exon 42 of 42	1		ENSP00000456192.1	H3BRD5
MYO9A	ENST00000568042.5 link	c.1019T>C	p.Leu340Ser	missense_variant	Exon 9 of 9	5		ENSP00000457407.1	H3BU05

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152230

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461726

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

727170

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.00000719

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152230

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74376

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Jun 29, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.7277T>C (p.L2426S) alteration is located in exon 42 (coding exon 41) of the MYO9A gene. This alteration results from a T to C substitution at nucleotide position 7277, causing the leucine (L) at amino acid position 2426 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Uncertain

0.038

BayesDel_noAF

Benign

-0.18

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.017

T;T

Eigen

Benign

-0.12

Eigen_PC

Benign

-0.022

FATHMM_MKL

Uncertain

0.82

LIST_S2

Benign

0.80

.;T

M_CAP

Uncertain

0.099

MetaRNN

Benign

0.094

T;T

MetaSVM

Benign

-0.46

MutationAssessor

Benign

1.6

L;L

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.92

N;.

REVEL

Uncertain

0.32

Sift

Uncertain

0.011

D;.

Sift4G

Uncertain

0.038

D;D

Polyphen

0.22

B;B

Vest4

0.21

MutPred

0.26

Loss of stability (P = 0.002);Loss of stability (P = 0.002);

MVP

0.15

MPC

0.19

ClinPred

0.43

GERP RS

5.5

Varity_R

0.096

gMVP

0.28

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over