NM_000043.6:c.763A>G

Variant names:

• chr10-89014205-A-G
• rs121913082
• NM_000043.6:c.763A>G

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 5P and 1B. PM1 PM2 PP5 BP4

The NM_000043.6(FAS):​c.763A>G​(p.Asn255Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: FAS NM_000043.6 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: -4.05
• Publications: 4 publications found

Genes affected

FAS (HGNC:11920): (Fas cell surface death receptor) The protein encoded by this gene is a member of the TNF-receptor superfamily. This receptor contains a death domain. It has been shown to play a central role in the physiological regulation of programmed cell death, and has been implicated in the pathogenesis of various malignancies and diseases of the immune system. The interaction of this receptor with its ligand allows the formation of a death-inducing signaling complex that includes Fas-associated death domain protein (FADD), caspase 8, and caspase 10. The autoproteolytic processing of the caspases in the complex triggers a downstream caspase cascade, and leads to apoptosis. This receptor has been also shown to activate NF-kappaB, MAPK3/ERK1, and MAPK8/JNK, and is found to be involved in transducing the proliferating signals in normal diploid fibroblast and T cells. Several alternatively spliced transcript variants have been described, some of which are candidates for nonsense-mediated mRNA decay (NMD). The isoforms lacking the transmembrane domain may negatively regulate the apoptosis mediated by the full length isoform. [provided by RefSeq, Mar 2011]

FAS Gene-Disease associations (from GenCC):

• autoimmune lymphoproliferative syndrome

  Inheritance: AD, AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: G2P, Orphanet
• autoimmune lymphoproliferative syndrome type 1

  Inheritance: AD, AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM1: In a hotspot region, there are 15 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 10 uncertain in NM_000043.6
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 10-89014205-A-G is Pathogenic according to our data. Variant chr10-89014205-A-G is described in ClinVar as Pathogenic. ClinVar VariationId is 16510.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.09044689). . Strength limited to SUPPORTING due to the PP5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAS	NM_000043.6	c.763A>G	p.Asn255Asp	missense_variant	Exon 9 of 9	ENST00000652046.1	NP_000034.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAS	ENST00000652046.1	c.763A>G	p.Asn255Asp	missense_variant	Exon 9 of 9		NM_000043.6	ENSP00000498466.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

SQUAMOUS CELL CARCINOMA, BURN SCAR-RELATED, SOMATIC Pathogenic:1

Jan 01, 2000

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.54
CADD	Benign	3.1
DANN	Benign	0.88
DEOGEN2	Uncertain	0.63	D;.
Eigen	Benign	-1.5
Eigen_PC	Benign	-1.6
FATHMM_MKL	Benign	0.0055	N
LIST_S2	Benign	0.58	T;T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.090	T;T
MetaSVM	Benign	-0.69	T
MutationAssessor	Uncertain	2.1	M;.
PhyloP100		-4.0
PrimateAI	Benign	0.33	T
PROVEAN	Benign	-1.3	N;N
REVEL	Benign	0.27
Sift	Benign	0.40	T;T
Sift4G	Benign	0.46	T;T
Polyphen		0.049	B;B
Vest4		0.088
MutPred		0.47		Gain of loop (P = 0.0312);.;
MVP		0.75
MPC		0.29
ClinPred		0.17	T
GERP RS		-9.3
Varity_R		0.19
Mutation Taster		=20/80	disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs121913082; hg19: chr10-90773962;