rs104894276

chr11-112233178-C-Gchr11-112233178-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 6P and 2B. PM1 PM2 PM5 BP4_Moderate

The NM_000317.3(PTS):c.259C>G(p.Pro87Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P87L) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTS NM_000317.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.21

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM1: In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 1 uncertain in NM_000317.3
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr11-112233179-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 553829.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.2624728).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PTS	NM_000317.3	c.259C>G	p.Pro87Ala	missense_variant	5/6	ENST00000280362.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PTS	ENST00000280362.8	c.259C>G	p.Pro87Ala	missense_variant	5/6	1	NM_000317.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251444 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135890

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.18
BayesDel_addAF	Pathogenic	0.32	D
BayesDel_noAF	Pathogenic	0.29
Cadd	Benign	23
Dann	Benign	0.92
Eigen	Benign	-0.063
Eigen_PC	Benign	0.097
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.29	T
M_CAP	Uncertain	0.23	D
MetaRNN	Benign	0.26	T
MetaSVM	Pathogenic	0.96	D
MutationTaster	Benign	1.0	D;D;N
PROVEAN	Benign	1.7	N
REVEL	Uncertain	0.52
Sift	Pathogenic	0.0	D
Vest4		0.34
MVP		0.90
ClinPred		0.30	T
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

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: rs104894276; hg19: chr11-112103901;