22-29673262-C-T

Variant names:

• chr22-29673262-C-T
• rs559511611
• NM_000268.4:c.1123-7C>T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_000268.4(NF2):​c.1123-7C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000656 in 152,350 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: NF2 NM_000268.4 splice_region, intron
• Scores: Splicing: ADA: 0.00004272
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.552
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• NF2-related schwannomatosis

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics, G2P
• familial meningioma

  Inheritance: Unknown Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).
• BP6: Variant 22-29673262-C-T is Benign according to our data. Variant chr22-29673262-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 2417384.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000268.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NF2	NM_000268.4	MANE Select	c.1123-7C>T		splice_region intron	N/A	NP_000259.1	P35240-1
	NF2	NM_001407066.1		c.1123-7C>T		splice_region intron	N/A	NP_001393995.1	P35240-3
	NF2	NM_016418.5		c.1123-7C>T		splice_region intron	N/A	NP_057502.2	P35240-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NF2	ENST00000338641.10	TSL:1 MANE Select	c.1123-7C>T		splice_region intron	N/A	ENSP00000344666.5	P35240-1
	NF2	ENST00000397789.3	TSL:1	c.1123-7C>T		splice_region intron	N/A	ENSP00000380891.3	P35240-3
	NF2	ENST00000403999.7	TSL:1	c.1123-7C>T		splice_region intron	N/A	ENSP00000384797.3	P35240-3

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152232 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000192

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 Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1409534 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 695980

African (AFR) AF: 0.00 AC: 0 AN: 32522

American (AMR) AF: 0.00 AC: 0 AN: 36200

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25212

East Asian (EAS) AF: 0.00 AC: 0 AN: 37292

South Asian (SAS) AF: 0.00 AC: 0 AN: 79888

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50008

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5702

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1084200

Other (OTH) AF: 0.00 AC: 0 AN: 58510

GnomAD4 genome AF: 0.00000656 AC: 1 AN: 152350 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74498

African (AFR) AF: 0.00 AC: 0 AN: 41574

American (AMR) AF: 0.00 AC: 0 AN: 15310

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10620

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68042

Other (OTH) AF: 0.00 AC: 0 AN: 2114

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Neurofibromatosis, type 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.75
CADD	Benign	2.1
DANN	Benign	0.65
PhyloP100		-0.55

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000043
dbscSNV1_RF	Benign	0.0
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

Other links and lift over

dbSNP: rs559511611; hg19: chr22-30069251;