9-112268105-A-G

Position:

• chr9-112268105-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001163788.4(PTBP3):​c.295T>C​(p.Tyr99His) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PTBP3 NM_001163788.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.90

Genes affected

PTBP3 (HGNC:10253): (polypyrimidine tract binding protein 3) The protein encoded by this gene binds RNA and is a regulator of cell differentiation. The encoded protein preferentially binds to poly(G) and poly(U) sequences in vitro. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PTBP3	NM_001163788.4	c.295T>C	p.Tyr99His	missense_variant	4/14	ENST00000374257.6	NP_001157260.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PTBP3	ENST00000374257.6	c.295T>C	p.Tyr99His	missense_variant	4/14	2	NM_001163788.4	ENSP00000363375	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 22, 2021

The c.388T>C (p.Y130H) alteration is located in exon 1 (coding exon 1) of the PTBP3 gene. This alteration results from a T to C substitution at nucleotide position 388, causing the tyrosine (Y) at amino acid position 130 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.39
BayesDel_addAF	Uncertain	0.073	D
BayesDel_noAF	Benign	-0.13
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.26	.;.;.;T;.;T
Eigen	Uncertain	0.35
Eigen_PC	Uncertain	0.46
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.93	D;D;D;D;D;D
M_CAP	Benign	0.033	D
MetaRNN	Uncertain	0.66	D;D;D;D;D;D
MetaSVM	Uncertain	-0.090	T
MutationAssessor	Pathogenic	3.2	.;.;.;M;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.57	T
PROVEAN	Uncertain	-3.8	D;D;D;D;D;D
REVEL	Uncertain	0.44
Sift	Benign	0.10	T;T;T;T;T;T
Sift4G	Benign	0.086	T;T;T;T;T;.
Polyphen		0.0050	B;P;.;B;.;.
Vest4		0.50
MutPred		0.44		.;.;.;Gain of disorder (P = 0.0249);.;.;
MVP		0.68
MPC		0.17
ClinPred		0.84	D
GERP RS		5.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.23
gMVP		0.47

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: chr9-115030385;