8-56113452-C-A

Variant names:

• chr8-56113452-C-A
• rs749423112
• NM_005372.1:c.531G>T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_005372.1(MOS):​c.531G>T​(p.Lys177Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000479 in 1,461,832 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: MOS NM_005372.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.63

Genes affected

MOS (HGNC:7199): (MOS proto-oncogene, serine/threonine kinase) MOS is a serine/threonine kinase that activates the MAP kinase cascade through direct phosphorylation of the MAP kinase activator MEK (MAP2K1; MIM 176872) (Prasad et al., 2008 [PubMed 18246541]).[supplied by OMIM, Jul 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.35180753).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MOS	NM_005372.1	c.531G>T	p.Lys177Asn	missense_variant	Exon 1 of 1	ENST00000311923.1	NP_005363.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MOS	ENST00000311923.1	c.531G>T	p.Lys177Asn	missense_variant	Exon 1 of 1	6	NM_005372.1	ENSP00000310722.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000796 AC: 2 AN: 251344 Hom.: 0 AF XY: 0.00000736 AC XY: 1 AN XY: 135886

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0000544

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000479 AC: 7 AN: 1461832 Hom.: 0 Cov.: 33 AF XY: 0.00000413 AC XY: 3 AN XY: 727216

Gnomad4 AFR exome AF: 0.0000597

Gnomad4 AMR exome AF: 0.0000447

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Dec 15, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.531G>T (p.K177N) alteration is located in exon 1 (coding exon 1) of the MOS gene. This alteration results from a G to T substitution at nucleotide position 531, causing the lysine (K) at amino acid position 177 to be replaced by an asparagine (N). 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	0.21
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Benign	0.23	T
Eigen	Benign	0.10
Eigen_PC	Benign	0.072
FATHMM_MKL	Uncertain	0.84	D
LIST_S2	Uncertain	0.94	D
M_CAP	Benign	0.078	D
MetaRNN	Benign	0.35	T
MetaSVM	Benign	-0.80	T
MutationAssessor	Benign	1.2	L
PrimateAI	Benign	0.31	T
PROVEAN	Benign	-2.2	N
REVEL	Benign	0.20
Sift	Uncertain	0.0040	D
Sift4G	Benign	0.11	T
Polyphen		0.78	P
Vest4		0.077
MutPred		0.45		Loss of methylation at K177 (P = 0.0067);
MVP		0.86
MPC		1.3
ClinPred		0.69	D
GERP RS		3.8
Varity_R		0.28
gMVP		0.58

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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

Other links and lift over

dbSNP: rs749423112; hg19: chr8-57026011;