12-102843750-GAGA-G

Position:

• chr12-102843750-GAGA-G

Variant summary

Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PP4 PM3 PM4 PM2

This summary comes from the ClinGen Evidence Repository: The c.1092_1094delTCT variant in PAH has been previously reported as a single variant, found in trans with the Pathogenic variant (per internal PAH ClinGen Working Group classification, see ClinVar allele ID 15635) p.Gly272Ter in one proband with classic PKU (PMID:1975559); phase was confirmed via parental testing (PM3). Apart from stating that the proband was identified via newborn screening further detail is provided regarding the proband’s phenotype, including whether BH4 deficiency was formally excluded (PP4?). The variant is a protein-length changing variant in a non-repeat region (PM4). It is absent from control databases including ethnically matched individuals, including gnomAD/ExAC, 1000 Genomes, and ESP (PM2). LINK:https://erepo.genome.network/evrepo/ui/classification/CA229337/MONDO:0009861/006

• Frequency: Genomes: not found (cov: 31)
• Consequence: PAH NM_000277.3 inframe_deletion
• Clinical Significance: Likely pathogenic reviewed by expert panel P:3 O:1
• Conservation: PhyloP100: 1.86

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 7 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PM3: For more information check the summary or visit ClinGen Evidence Repository.
• PM4: For more information check the summary or visit ClinGen Evidence Repository.
• PP4: For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PAH	NM_000277.3	c.1092_1094del	p.Leu365del	inframe_deletion	11/13	ENST00000553106.6	NP_000268.1
PAH	NM_001354304.2	c.1092_1094del	p.Leu365del	inframe_deletion	12/14		NP_001341233.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PAH	ENST00000553106.6	c.1092_1094del	p.Leu365del	inframe_deletion	11/13	1	NM_000277.3	ENSP00000448059	P1

Frequencies

GnomAD3 genomes Cov.: 31

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome Cov.: 31

Bravo AF: 0.00000378

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:3 Other:1

Revision: reviewed by expert panel

Submissions by phenotype

Phenylketonuria Pathogenic:3

Pathogenic, no assertion criteria provided	literature only	OMIM	Aug 01, 1990	- -
Likely pathogenic, reviewed by expert panel	curation	ClinGen PAH Variant Curation Expert Panel	May 04, 2019	The c.1092_1094delTCT variant in PAH has been previously reported as a single variant, found in trans with the Pathogenic variant (per internal PAH ClinGen Working Group classification, see ClinVar allele ID 15635) p.Gly272Ter in one proband with classic PKU (PMID: 1975559); phase was confirmed via parental testing (PM3). Apart from stating that the proband was identified via newborn screening further detail is provided regarding the proband's phenotype, including whether BH4 deficiency was formally excluded (PP4?). The variant is a protein-length changing variant in a non-repeat region (PM4). It is absent from control databases including ethnically matched individuals, including gnomAD/ExAC, 1000 Genomes, and ESP (PM2). -
Likely pathogenic, criteria provided, single submitter	clinical testing	Cellular and Molecular Medicine Research Institute, Urmia University of Medical Sciences	Sep 19, 2023	- -

not provided Other:1

not provided, no classification provided

literature only

DeBelle Laboratory for Biochemical Genetics, MUHC/MCH RESEARCH INSTITUTE

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Computational scores

Source: dbNSFP v4.3

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: rs62516096; hg19: chr12-103237528;