1-46610048-A-G

Variant names:

• chr1-46610048-A-G
• rs1675438294
• NM_201403.3:c.575T>C

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_201403.3(MOB3C):​c.575T>C​(p.Phe192Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: MOB3C NM_201403.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.32

Genes affected

MOB3C (HGNC:29800): (MOB kinase activator 3C) The protein encoded by this gene is similar to the yeast Mob1 protein. Yeast Mob1 binds Mps1p, a protein kinase essential for spindle pole body duplication and mitotic checkpoint regulation. Alternatively spliced transcript variants encoding distinct isoforms have been observed. [provided by RefSeq, Jul 2008]

MKNK1 (HGNC:7110): (MAPK interacting serine/threonine kinase 1) This gene encodes a Ser/Thr protein kinase that interacts with, and is activated by ERK1 and p38 mitogen-activated protein kinases, and thus may play a role in the response to environmental stress and cytokines. This kinase may also regulate transcription by phosphorylating eIF4E via interaction with the C-terminal region of eIF4G. Alternatively spliced transcript variants have been noted for this gene. [provided by RefSeq, Jan 2012]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.978

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MOB3C	NM_201403.3	c.575T>C	p.Phe192Ser	missense_variant	Exon 3 of 4	ENST00000319928.9	NP_958805.1
MOB3C	NM_145279.5	c.575T>C	p.Phe192Ser	missense_variant	Exon 3 of 4		NP_660322.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MOB3C	ENST00000319928.9	c.575T>C	p.Phe192Ser	missense_variant	Exon 3 of 4	2	NM_201403.3	ENSP00000315113.3
MOB3C	ENST00000271139.13	c.575T>C	p.Phe192Ser	missense_variant	Exon 3 of 4	1		ENSP00000271139.9
MOB3C	ENST00000371940.1	c.575T>C	p.Phe192Ser	missense_variant	Exon 2 of 3	1		ENSP00000361008.2
MKNK1	ENST00000531769.6	c.-171+6663T>C		intron_variant	Intron 1 of 4	4		ENSP00000434021.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Oct 01, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.731T>C (p.F244S) alteration is located in exon 3 (coding exon 3) of the MOB3C gene. This alteration results from a T to C substitution at nucleotide position 731, causing the phenylalanine (F) at amino acid position 244 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	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.51	D
BayesDel_noAF	Pathogenic	0.49
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.45	T;D;T
Eigen	Pathogenic	0.99
Eigen_PC	Pathogenic	0.89
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	1.0	D;D;.
M_CAP	Uncertain	0.15	D
MetaRNN	Pathogenic	0.98	D;D;D
MetaSVM	Uncertain	0.53	D
MutationAssessor	Pathogenic	4.0	H;.;H
PrimateAI	Pathogenic	0.81	D
PROVEAN	Pathogenic	-7.2	D;D;.
REVEL	Pathogenic	0.85
Sift	Pathogenic	0.0	D;D;.
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		1.0	D;.;D
Vest4		0.98
MutPred		0.92		Gain of ubiquitination at K187 (P = 0.0754);.;Gain of ubiquitination at K187 (P = 0.0754);
MVP		0.61
MPC		1.7
ClinPred		1.0	D
GERP RS		5.2
Varity_R		0.93
gMVP		0.69

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

Other links and lift over

dbSNP: rs1675438294; hg19: chr1-47075720;