NM_000277.3:c.1357_*2delTAAAG

Variant names:

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PP4_ModeratePM2_SupportingPM3_StrongPM4

This summary comes from the ClinGen Evidence Repository: The c.1357_*2delTAAAG (p.Ter453Profs) variant in PAH has been reported in multiple individuals with PAH deficiency; one with other causes of hyperphenylalninemia ruled out with panel sequencing. (PP4_Moderate; PMID:10679941, data share with Invitae). This variant is at low frequency in population databases (TopMed AF=0.00001). This variant was detected with known pathogenic/likely pathogenic variants: p.L48 (unknown phase, PMID:10679941); c.1066-11G>A, p.Arg408Trp, p.Arg155Pro, (unknown phase, PMID:32668217); and Leu348Val (in trans, data share with Invitae). The deletion p.Ter453Profs is predicted to abolish the stop codon and causes an elongation of the polypeptide by 35 amino acids (PM4). In summary, this variant meets criteria to be classified as likely pathogenic for PAH. PAH-specific ACMG/AMP criteria applied: PP4_moderate, PM2-supporting, PM3_strong, PM4. LINK:https://erepo.genome.network/evrepo/ui/classification/CV194161/MONDO:0009861/006

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

PAH
NM_000277.3 frameshift, stop_lost

Scores

Not classified

Clinical Significance

Likely pathogenic reviewed by expert panel P:4

Conservation

PhyloP100: 6.97

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_pathogenic. Variant got 9 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 rank	MANE	Protein	UniProt
PAH	NM_000277.3 link	c.1357_*2delTAAAG	p.Ter453fs	frameshift_variant, stop_lost	Exon 13 of 13	ENST00000553106.6	NP_000268.1	P00439A0A024RBG4
PAH	NM_000277.3 link	c.1358_*2delTAAAG		3_prime_UTR_variant	Exon 13 of 13	ENST00000553106.6	NP_000268.1	P00439A0A024RBG4
PAH	NM_001354304.2 link	c.1357_*2delTAAAG	p.Ter453fs	frameshift_variant, stop_lost	Exon 14 of 14		NP_001341233.1
PAH	NM_001354304.2 link	c.1358_*2delTAAAG		3_prime_UTR_variant	Exon 14 of 14		NP_001341233.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PAH	ENST00000553106.6 link	c.1357_*2delTAAAG	p.Ter453fs	frameshift_variant, stop_lost	Exon 13 of 13	1	NM_000277.3	ENSP00000448059.1		P00439
PAH	ENST00000553106 link	c.1358_*2delTAAAG		3_prime_UTR_variant	Exon 13 of 13	1	NM_000277.3	ENSP00000448059.1		P00439

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152146

Hom.:

Cov.:

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:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1460874

Hom.:

AF XY:

0.00000413

AC XY:

AN XY:

726764

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152146

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74314

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000113

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:4

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

Phenylketonuria

Pathogenic:3

Oct 04, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change disrupts the translational stop signal of the PAH mRNA. It is expected to extend the length of the PAH protein by 33 additional amino acid residues. This variant is not present in population databases (gnomAD no frequency). This protein extension has been observed in individual(s) with PAH-related conditions (PMID: 10679941; internal data). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. 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. -

Feb 10, 2024

Baylor Genetics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Jul 23, 2023

ClinGen PAH Variant Curation Expert Panel

Significance: Likely pathogenic

Review Status: reviewed by expert panel

Collection Method: curation

The c.1357_*2delTAAAG (p.Ter453Profs) variant in PAH has been reported in multiple individuals with PAH deficiency; one with other causes of hyperphenylalninemia ruled out with panel sequencing. (PP4_Moderate; PMID: 10679941, data share with Invitae). This variant is at low frequency in population databases (TopMed AF=0.00001). This variant was detected with known pathogenic/likely pathogenic variants: p.L48 (unknown phase, PMID: 10679941); c.1066-11G>A, p.Arg408Trp, p.Arg155Pro, (unknown phase, PMID: 32668217); and Leu348Val (in trans, data share with Invitae). The deletion p.Ter453Profs is predicted to abolish the stop codon and causes an elongation of the polypeptide by 35 amino acids (PM4). In summary, this variant meets criteria to be classified as likely pathogenic for PAH. PAH-specific ACMG/AMP criteria applied: PP4_moderate, PM2-supporting, PM3_strong, PM4. -

not provided

Pathogenic:1

Feb 02, 2015

Eurofins Ntd Llc (ga)

Significance: Pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over