rs199957176

Positions:

• chr22-29668350-C-G
• chr22-29668350-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM1 PM2

The NM_000268.4(NF2):​c.903C>G​(p.Ile301Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NF2 NM_000268.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.63

Genes affected

NF2 (HGNC:7773): (NF2, moesin-ezrin-radixin like (MERLIN) tumor suppressor) This gene encodes a protein that is similar to some members of the ERM (ezrin, radixin, moesin) family of proteins that link cytoskeletal components with proteins in the cell membrane. The encoded protein is involved in regulation of contact-dependent inhibition of cell proliferation and functions in cell-cell adhesion and transmembrane signaling. The encoded protein has been shown to interact with cell-surface proteins, proteins involved in cytoskeletal dynamics, and proteins involved in regulating ion transport. Disruption of this protein's function has been implicated in tumorigenesis and metastasis. Mutations in this gene are associated with neurofibromatosis type II which is characterized by nervous system and skin tumors and ocular abnormalities. [provided by RefSeq, May 2022]

NF2 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM1: In a domain FERM (size 289) in uniprot entity MERL_HUMAN there are 14 pathogenic changes around while only 1 benign (93%) in NM_000268.4
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NF2	NM_000268.4	c.903C>G	p.Ile301Met	missense_variant	10/16	ENST00000338641.10	NP_000259.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NF2	ENST00000338641.10	c.903C>G	p.Ile301Met	missense_variant	10/16	1	NM_000268.4	ENSP00000344666.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Bravo AF: 0.0000151

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Uncertain	0.0
CADD	Benign	12
DANN	Benign	0.88
DEOGEN2	Uncertain	0.50	D;.;.;.;.;.;.;.;.
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.2
FATHMM_MKL	Benign	0.14	N
LIST_S2	Uncertain	0.88	D;D;D;.;.;D;.;D;D
M_CAP	Uncertain	0.13	D
MetaRNN	Uncertain	0.71	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.18	D
MutationAssessor	Benign	0.77	N;N;.;N;.;.;N;.;N
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-0.33	N;N;N;N;N;N;N;N;N
REVEL	Uncertain	0.62
Sift	Benign	0.71	T;T;T;T;T;T;T;T;T
Sift4G	Benign	1.0	T;T;T;T;T;T;T;T;T
Polyphen		0.50	P;.;P;P;P;P;P;D;P
Vest4		0.81
MutPred		0.57		Gain of disorder (P = 0.0286);Gain of disorder (P = 0.0286);.;Gain of disorder (P = 0.0286);.;.;Gain of disorder (P = 0.0286);.;Gain of disorder (P = 0.0286);
MVP		0.93
MPC		1.6
ClinPred		0.42	T
GERP RS		-7.3
Varity_R		0.19
gMVP		0.50

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: rs199957176; hg19: chr22-30064339;