rs199475620

Positions:

chr12-102894876-GAGA-G

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PS3PP4PM4PM3PM2

This summary comes from the ClinGen Evidence Repository: PAH-specific ACMG/AMP criteria applied: PP4: Phe>120 umol/L with PKU (PMID:25456745); PM3: In trans with: c.842+2T>A (P, ClinGen) (PMID:25456745); PS3: 0% in BioPKU; PM2: Extremely low frequency. ExAC MAF=0.00012; PM4: In frame deletion. In summary this variant meets criteria to be classified as pathogenic for phenylketonuria in an autosomal recessive manner based on the ACMG/AMP criteria applied as specified by the PAH Expert Panel: (PP4, PM3, PS3, PM2, PM4). LINK:https://erepo.genome.network/evrepo/ui/classification/CA229490/MONDO:0009861/006

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000021 ( 0 hom. )

Consequence

PAH
NM_000277.3 inframe_deletion

Scores

Not classified

Clinical Significance

Pathogenic reviewed by expert panel P:7O:3

Conservation

PhyloP100: 8.90

Variant links:

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]

PAH links:

LOC124902999 (HGNC:):

LOC124902999 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PS3

For more information check the summary or visit ClinGen Evidence Repository.

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 linkuse as main transcript	c.208_210del	p.Ser70del	inframe_deletion	3/13	ENST00000553106.6	NP_000268.1
LOC124902999	XR_007063428.1 linkuse as main transcript	n.863-9819_863-9817del		intron_variant, non_coding_transcript_variant
PAH	NM_001354304.2 linkuse as main transcript	c.208_210del	p.Ser70del	inframe_deletion	4/14		NP_001341233.1
PAH	XM_017019370.2 linkuse as main transcript	c.208_210del	p.Ser70del	inframe_deletion	3/7		XP_016874859.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PAH	ENST00000553106.6 linkuse as main transcript	c.208_210del	p.Ser70del	inframe_deletion	3/13	1	NM_000277.3	ENSP00000448059	P1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

1

AN:

152068

Hom.:

0

Cov.:

32

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

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

GnomAD3 exomes

AF:

0.0000119

AC:

3

AN:

251342

Hom.:

0

AF XY:

0.00000736

AC XY:

1

AN XY:

135842

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000544

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.00000205

AC:

3

AN:

1461628

Hom.:

0

AF XY:

0.00000275

AC XY:

2

AN XY:

727132

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.00000657

AC:

1

AN:

152186

Hom.:

0

Cov.:

32

AF XY:

0.00

AC XY:

0

AN XY:

74410

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

0

Bravo

AF:

0.0000151

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:7Other:3

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Phenylketonuria

Pathogenic:7

Pathogenic, reviewed by expert panel	curation	ClinGen PAH Variant Curation Expert Panel	Aug 05, 2018	PAH-specific ACMG/AMP criteria applied: PP4: Phe>120 umol/L with PKU (PMID:25456745); PM3: In trans with: c.842+2T>A (P, ClinGen) (PMID:25456745); PS3: 0% in BioPKU; PM2: Extremely low frequency. ExAC MAF=0.00012; PM4: In frame deletion. In summary this variant meets criteria to be classified as pathogenic for phenylketonuria in an autosomal recessive manner based on the ACMG/AMP criteria applied as specified by the PAH Expert Panel: (PP4, PM3, PS3, PM2, PM4). -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Nov 17, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 11, 2024	This variant, c.208_210del, results in the deletion of 1 amino acid(s) of the PAH protein (p.Ser70del), but otherwise preserves the integrity of the reading frame. This variant is present in population databases (rs62642094, gnomAD 0.006%). This variant has been observed in individual(s) with PAH-related diseases from mild hyperphenylalaninemia to classic phenylketonuria (PMID: 15503242, 16256386, 23271928, 23932990; Invitae). ClinVar contains an entry for this variant (Variation ID: 102632). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. For these reasons, this variant has been classified as Pathogenic. -
Pathogenic, no assertion criteria provided	clinical testing	Natera, Inc.	Sep 16, 2020	- -
Pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jul 26, 2021	- -
Pathogenic, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Oct 07, 2021	Variant summary: PAH c.208_210delTCT (p.Ser70del) results in an in-frame deletion that is predicted to remove one amino acid from the encoded protein that is located in the ACT domain (IPR002912), which proposed to have a regulatory role in protein function (InterPro). The variant allele was found at a frequency of 1.2e-05 in 251342 control chromosomes (gnomAD). c.208_210delTCT has been reported in the literature in several compound heterozygous and homozygous individuals (mostly of East Asian origin) who were affected with Phenylalanine Hydroxylase Deficiency (Phenylketonuria), with reported disease phenotypes ranging from mild hyperphenylalaninemia to classic phenylketonuria (e.g. Okano_1998, Okano_2011, Zhu_2013, Tao_2015, Li_2018, Su_2019, Tao_2021); of note, in the 5 reported homozygous patients a mild PKU phenotype was described (Li_2018, Su_2019). These data indicate that the variant is very likely to be associated with disease. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Four submitters, including an expert panel (ClinGen PAH Variant Curation Expert Panel), have provided clinical-significance assessments for this variant in ClinVar after 2014, and all of them classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. -
Pathogenic, criteria provided, single submitter	clinical testing	Counsyl	Nov 24, 2015	- -

not provided

Other:3

not provided, no classification provided	literature only	DeBelle Laboratory for Biochemical Genetics, MUHC/MCH RESEARCH INSTITUTE	-	- -
not provided, flagged submission	literature only	DeBelle Laboratory for Biochemical Genetics, MUHC/MCH RESEARCH INSTITUTE	-	- -
not provided, flagged submission	literature only	DeBelle Laboratory for Biochemical Genetics, MUHC/MCH RESEARCH INSTITUTE	-	- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

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

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs62642094; hg19: chr12-103288654;