Genetic Variant NM_138789.4:c.427A>T (chr11-112071158-T-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_138789.4(PIH1D2):c.427A>T(p.Thr143Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000682 in 1,613,750 control chromosomes in the GnomAD database, with no homozygous occurrence. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

PIH1D2
NM_138789.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.24

Variant links:

Genes affected

PIH1D2 (HGNC:25210): (PIH1 domain containing 2) Enables small GTPase binding activity. Predicted to be involved in box C/D snoRNP assembly and rRNA processing. Predicted to be part of R2TP complex and ribonucleoprotein complex. Predicted to be active in cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

PIH1D2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
PIH1D2	NM_138789.4 link	c.427A>T	p.Thr143Ser	missense_variant	Exon 4 of 6	ENST00000280350.10	NP_620144.1	Q8WWB5-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PIH1D2	ENST00000280350.10 link	c.427A>T	p.Thr143Ser	missense_variant	Exon 4 of 6	5	NM_138789.4	ENSP00000280350.4		Q8WWB5-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152096

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251398

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135872

show subpopulations

Gnomad AFR exome

AF:

0.00

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461654

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727134

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:

0.00000809

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152096

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74328

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 26, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.427A>T (p.T143S) alteration is located in exon 4 (coding exon 3) of the PIH1D2 gene. This alteration results from a A to T substitution at nucleotide position 427, causing the threonine (T) at amino acid position 143 to be replaced by a serine (S). 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

Benign

0.11

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.48

CADD

Benign

DANN

Benign

0.84

DEOGEN2

Benign

0.0044

.;.;T;T;.

Eigen

Benign

0.052

Eigen_PC

Benign

0.054

FATHMM_MKL

Uncertain

0.83

LIST_S2

Benign

0.49

.;T;.;T;T

M_CAP

Benign

0.0056

MetaRNN

Uncertain

0.47

T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.3

M;M;M;M;M

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.87

N;N;N;N;N

REVEL

Benign

0.15

Sift

Benign

0.22

T;T;T;T;T

Sift4G

Benign

0.093

T;T;T;T;T

Polyphen

0.84

.;.;P;P;.

Vest4

0.097

MutPred

0.59

Gain of disorder (P = 0.0679);Gain of disorder (P = 0.0679);Gain of disorder (P = 0.0679);Gain of disorder (P = 0.0679);Gain of disorder (P = 0.0679);

MVP

0.59

MPC

0.19

ClinPred

0.20

GERP RS

5.9

Varity_R

0.099

gMVP

0.14

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

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