chr11-112226477-G-C

Position:

• chr11-112226477-G-C

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1 PM2 PP3_Strong

The ENST00000280362.8(PTS):​c.34G>C​(p.Ala12Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. A12A) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: PTS ENST00000280362.8 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.86

Genes affected

PTS (HGNC:9689): (6-pyruvoyltetrahydropterin synthase) The enzyme encoded by this gene catalyzes the elimination of inorganic triphosphate from dihydroneopterin triphosphate, which is the second and irreversible step in the biosynthesis of tetrahydrobiopterin from GTP. Tetrahydrobiopterin, also known as BH(4), is an essential cofactor and regulator of various enzyme activities, including enzymes involved in serotonin biosynthesis and NO synthase activity. Mutations in this gene result in hyperphenylalaninemia. [provided by RefSeq, Oct 2008]

PTS (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 7 uncertain in ENST00000280362.8
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.972

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PTS	NM_000317.3	c.34G>C	p.Ala12Pro	missense_variant	1/6	ENST00000280362.8	NP_000308.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PTS	ENST00000280362.8	c.34G>C	p.Ala12Pro	missense_variant	1/6	1	NM_000317.3	ENSP00000280362.3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

6-Pyruvoyl-tetrahydrobiopterin synthase deficiency Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Juno Genomics, Hangzhou Juno Genomics, Inc

-

PM2_Supporting+PP4 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.66
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.23
CADD	Uncertain	23
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.60	D;.
Eigen	Uncertain	0.22
Eigen_PC	Benign	0.099
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.54	T;T
M_CAP	Pathogenic	0.86	D
MetaRNN	Pathogenic	0.97	D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.4	M;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Uncertain	0.62	T
PROVEAN	Benign	-1.8	N;N
REVEL	Pathogenic	0.65
Sift	Uncertain	0.010	D;D
Sift4G	Uncertain	0.044	D;D
Polyphen		0.60	P;.
Vest4		0.77
MutPred		0.76		Gain of relative solvent accessibility (P = 0.0023);Gain of relative solvent accessibility (P = 0.0023);
MVP		1.0
MPC		1.1
ClinPred		0.96	D
GERP RS		4.2
Varity_R		0.96
gMVP		0.91

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr11-112097200;