rs199475623

Positions:

• chr12-102877517-T-A
• chr12-102877517-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM5 PP3 PM2

This summary comes from the ClinGen Evidence Repository: The c.386A>T (p.Asp129Val) variant in PAH has not been reported in the literature to our knowledge. This variant is absent from 1000G, ESP, ExAC and gnomAD (PM2). A deleterious effect is predicted in SIFT, Polyphen-2, MutationTaster, and REVEL=0.986 (PM3). The (p.Asp129Gly) variant is likely pathogenic by 1 submitter and PAH VCEP (PM5). In summary, this variant meets criteria to be classified as uncertain significance for PAH. PAH-specific ACMG/AMP criteria applied: PM2, PM5, PP3. LINK:https://erepo.genome.network/evrepo/ui/classification/CA229529/MONDO:0009861/006

• Frequency: Genomes: not found (cov: 31)
• Consequence: PAH NM_000277.3 missense
• Clinical Significance: Uncertain significance reviewed by expert panel U:1 O:1
• Conservation: PhyloP100: 7.38

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: For more information check the summary or visit ClinGen Evidence Repository.
• PM5: For more information check the summary or visit ClinGen Evidence Repository.
• PP3: 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.386A>T	p.Asp129Val	missense_variant	4/13	ENST00000553106.6	NP_000268.1
PAH	NM_001354304.2	c.386A>T	p.Asp129Val	missense_variant	5/14		NP_001341233.1
PAH	XM_017019370.2	c.386A>T	p.Asp129Val	missense_variant	4/7		XP_016874859.1
LOC124902999	XR_007063428.1	n.808-2362T>A		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PAH	ENST00000553106.6	c.386A>T	p.Asp129Val	missense_variant	4/13	1	NM_000277.3	ENSP00000448059.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1 Other:1

Revision: reviewed by expert panel

Submissions by phenotype

Phenylketonuria Uncertain:1

Uncertain significance, reviewed by expert panel

curation

ClinGen PAH Variant Curation Expert Panel

Jan 26, 2020

The c.386A>T (p.Asp129Val) variant in PAH has not been reported in the literature to our knowledge. This variant is absent from 1000G, ESP, ExAC and gnomAD (PM2). A deleterious effect is predicted in SIFT, Polyphen-2, MutationTaster, and REVEL=0.986 (PM3). The (p.Asp129Gly) variant is likely pathogenic by 1 submitter and PAH VCEP (PM5). In summary, this variant meets criteria to be classified as uncertain significance for PAH. PAH-specific ACMG/AMP criteria applied: PM2, PM5, PP3. -

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

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.58
CADD	Pathogenic	30
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	1.0	D;D;T
Eigen	Pathogenic	1.0
Eigen_PC	Pathogenic	0.93
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.98	D;D;D
M_CAP	Pathogenic	0.85	D
MetaRNN	Pathogenic	0.99	D;D;D
MetaSVM	Pathogenic	0.91	D
MutationAssessor	Pathogenic	4.3	H;.;.
PrimateAI	Uncertain	0.78	T
PROVEAN	Pathogenic	-8.7	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;.;.
Vest4		0.99
MutPred		0.96		Gain of MoRF binding (P = 0.0553);.;Gain of MoRF binding (P = 0.0553);
MVP		1.0
MPC		0.27
ClinPred		1.0	D
GERP RS		5.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.8
Varity_R		0.93
gMVP		0.96

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.19		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: rs199475623; hg19: chr12-103271295;