rs62516142

Positions:

• chr12-102843665-C-A
• chr12-102843665-C-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP4 PP3 PM3

This summary comes from the ClinGen Evidence Repository: The c.1180G>T (p.Asp394Tyr) variant in PAH has been reported in 2 French patients with mild PKU, BH4 deficiency not ruled out PMID:26666653. Detected with pathogenic variants p.T380M and 1066-3C > T, parental analysis not performed. This variant is absent in population databases. Multiple lines of computational evidence support a deleterious effect. In summary, this variant meets criteria to be classified as likely pathogenic for PAH. PAH-specific ACMG/AMP criteria applied: PP4, PM2, PM3, PP3. LINK:https://erepo.genome.network/evrepo/ui/classification/CA267632/MONDO:0009861/006

• Frequency: Genomes: not found (cov: 31)
• Consequence: PAH NM_000277.3 missense
• Clinical Significance: Likely pathogenic reviewed by expert panel P:2
• Conservation: PhyloP100: 5.01

Genes affected

PAH (HGNC:8582): (phenylalanine hydroxylase) This gene encodes a member of the biopterin-dependent aromatic amino acid hydroxylase protein family. The encoded phenylalanine hydroxylase enzyme hydroxylates phenylalanine to tyrosine and is the rate-limiting step in phenylalanine catabolism. Deficiency of this enzyme activity results in the autosomal recessive disorder phenylketonuria. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PAH	NM_000277.3	c.1180G>T	p.Asp394Tyr	missense_variant	11/13	ENST00000553106.6
PAH	NM_001354304.2	c.1180G>T	p.Asp394Tyr	missense_variant	12/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PAH	ENST00000553106.6	c.1180G>T	p.Asp394Tyr	missense_variant	11/13	1	NM_000277.3	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: reviewed by expert panel

Submissions by phenotype

Phenylketonuria Pathogenic:2

Likely pathogenic, no assertion criteria provided	literature only	Inserm U 954, Faculté de Médecine de Nancy	-	- -
Likely pathogenic, reviewed by expert panel	curation	ClinGen PAH Variant Curation Expert Panel	Jul 10, 2020	The c.1180G>T (p.Asp394Tyr) variant in PAH has been reported in 2 French patients with mild PKU, BH4 deficiency not ruled out PMID: 26666653. Detected with pathogenic variants p.T380M and 1066-3C > T, parental analysis not performed. This variant is absent in population databases. Multiple lines of computational evidence support a deleterious effect. In summary, this variant meets criteria to be classified as likely pathogenic for PAH. PAH-specific ACMG/AMP criteria applied: PP4, PM2, PM3, PP3. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Pathogenic	0.52	D
BayesDel_noAF	Pathogenic	0.51
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.98	D;D
Eigen	Pathogenic	0.72
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Pathogenic	0.97	D;D
M_CAP	Pathogenic	0.79	D
MetaRNN	Pathogenic	0.98	D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Uncertain	2.5	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.56	T
PROVEAN	Pathogenic	-5.3	D;D
REVEL	Pathogenic	0.94
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0010	D;D
Polyphen		1.0	D;.
Vest4		0.94
MutPred		0.80		Loss of disorder (P = 0.0429);.;
MVP		0.98
MPC		0.23
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.95
gMVP		0.95

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.14		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: rs62516142; hg19: chr12-103237443;