22-50601856-G-T

Position:

• chr22-50601856-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_012324.6(MAPK8IP2):​c.133G>T​(p.Gly45Cys) 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: 33)
• Consequence: MAPK8IP2 NM_012324.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.84

Genes affected

MAPK8IP2 (HGNC:6883): (mitogen-activated protein kinase 8 interacting protein 2) This gene encodes a scaffold protein that is thought to be involved in the regulation of the c-Jun amino-terminal kinase signaling pathway. This protein has been shown to interact with and regulate the activity of MAPK8/JNK1 and MAP2K7/MKK7 kinases. [provided by RefSeq, Jun 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.893

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MAPK8IP2	NM_012324.6	c.133G>T	p.Gly45Cys	missense_variant	2/12	ENST00000329492.6	NP_036456.1
MAPK8IP2	XM_011530679.3	c.133G>T	p.Gly45Cys	missense_variant	2/12		XP_011528981.1
MAPK8IP2	XM_011530680.3	c.133G>T	p.Gly45Cys	missense_variant	2/12		XP_011528982.1
MAPK8IP2	XM_011530681.3	c.133G>T	p.Gly45Cys	missense_variant	2/12		XP_011528983.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MAPK8IP2	ENST00000329492.6	c.133G>T	p.Gly45Cys	missense_variant	2/12	1	NM_012324.6	ENSP00000330572.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 26, 2023

The c.133G>T (p.G45C) alteration is located in exon 2 (coding exon 2) of the MAPK8IP2 gene. This alteration results from a G to T substitution at nucleotide position 133, causing the glycine (G) at amino acid position 45 to be replaced by a cysteine (C). 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	0.79
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.21
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.74	D
Eigen	Pathogenic	0.81
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.49	D
MetaRNN	Pathogenic	0.89	D
MetaSVM	Uncertain	0.58	D
MutationAssessor	Benign	1.4	L
PROVEAN	Pathogenic	-4.6	D
REVEL	Uncertain	0.63
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		1.0	D
Vest4		0.89
MutPred		0.24		Loss of catalytic residue at G45 (P = 0.1189);
MVP		0.93
ClinPred		1.0	D
GERP RS		4.9
Varity_R		0.61
gMVP		0.29

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr22-51040285;