rs80338897

Variant names:

• chr15-80172240-A-T
• rs80338897
• NM_000137.4:c.698A>T

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM2 PM5 PP3_Strong PP5_Moderate

The NM_000137.4(FAH):​c.698A>T​(p.Asp233Val) 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. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D233N) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: FAH NM_000137.4 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1 O:1
• Conservation: PhyloP100: 8.64
• Publications: 12 publications found

Genes affected

FAH (HGNC:3579): (fumarylacetoacetate hydrolase) Predicted to enable fumarylacetoacetase activity. Predicted to be involved in L-phenylalanine catabolic process; homogentisate catabolic process; and tyrosine catabolic process. Predicted to act upstream of or within arginine catabolic process. Located in extracellular exosome. Implicated in tyrosinemia type I. [provided by Alliance of Genome Resources, Apr 2022]

FAH Gene-Disease associations (from GenCC):

• tyrosinemia type I

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Myriad Women’s Health, Laboratory for Molecular Medicine, G2P, Orphanet, Ambry Genetics, ClinGen

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr15-80172239-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 1478103.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.995
• PP5: Variant 15-80172240-A-T is Pathogenic according to our data. Variant chr15-80172240-A-T is described in ClinVar as Pathogenic. ClinVar VariationId is 21057.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FAH	NM_000137.4	c.698A>T	p.Asp233Val	missense_variant	Exon 8 of 14	ENST00000561421.6	NP_000128.1
FAH	NM_001374377.1	c.698A>T	p.Asp233Val	missense_variant	Exon 9 of 15		NP_001361306.1
FAH	NM_001374380.1	c.698A>T	p.Asp233Val	missense_variant	Exon 9 of 15		NP_001361309.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FAH	ENST00000561421.6	c.698A>T	p.Asp233Val	missense_variant	Exon 8 of 14	1	NM_000137.4	ENSP00000453347.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1 Other:1

Revision: criteria provided, single submitter

Submissions by phenotype

Tyrosinemia type I Pathogenic:1 Other:1

-

GeneReviews

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

Turkish-specific pathogenic variant resulting from founder effect or genetic drift [Angileri et al 2015]. -

Sep 06, 2022

Baylor Genetics

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.58	D
BayesDel_noAF	Pathogenic	0.60
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.98	D;D;D
Eigen	Pathogenic	0.94
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	1.0	.;.;D
M_CAP	Pathogenic	0.88	D
MetaRNN	Pathogenic	1.0	D;D;D
MetaSVM	Pathogenic	0.96	D
MutationAssessor	Pathogenic	4.8	H;H;H
PhyloP100		8.6
PrimateAI	Pathogenic	0.82	D
PROVEAN	Pathogenic	-8.8	D;D;D
REVEL	Pathogenic	0.99
Sift	Pathogenic	0.0	D;D;D
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		1.0	D;D;D
Vest4		1.0
MutPred		0.97		Gain of MoRF binding (P = 0.0776);Gain of MoRF binding (P = 0.0776);Gain of MoRF binding (P = 0.0776);
MVP		0.98
MPC		1.0
ClinPred		1.0	D
GERP RS		4.9
Varity_R		0.98
gMVP		0.96
Mutation Taster		=0/100	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.13		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: rs80338897; hg19: chr15-80464582;