Variant 11-45934062-G-C details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 1P and 6B. PP2BP4_ModerateBS2

The NM_001352027.3(PHF21A):c.1952C>G(p.Thr651Ser) variant causes a missense change. The variant allele was found at a frequency of 0.00000616 in 1,461,628 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T651I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

PHF21A
NM_001352027.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.50

Variant links:

Genes affected

PHF21A (HGNC:24156): (PHD finger protein 21A) The PHF21A gene encodes BHC80, a component of a BRAF35 (MIM 605535)/histone deacetylase (HDAC; see MIM 601241) complex (BHC) that mediates repression of neuron-specific genes through the cis-regulatory element known as repressor element-1 (RE1) or neural restrictive silencer (NRS) (Hakimi et al., 2002 [PubMed 12032298]).[supplied by OMIM, Nov 2010]

PHF21A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), PHF21A. . Gene score misZ 2.8609 (greater than the threshold 3.09). Trascript score misZ 3.1268 (greater than threshold 3.09). GenCC has associacion of gene with complex neurodevelopmental disorder, intellectual developmental disorder with behavioral abnormalities and craniofacial dysmorphism with or without seizures, Potocki-Shaffer syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.25552264).

BS2

High AC in GnomAdExome4 at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PHF21A	NM_001352027.3 linkuse as main transcript	c.1952C>G	p.Thr651Ser	missense_variant	19/19	ENST00000676320.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PHF21A	ENST00000676320.1 linkuse as main transcript	c.1952C>G	p.Thr651Ser	missense_variant	19/19		NM_001352027.3	P3	Q96BD5-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000200

AC:

AN:

249950

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135288

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000272

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

AF:

0.00000616

AC:

AN:

1461628

Hom.:

Cov.:

AF XY:

0.00000688

AC XY:

AN XY:

727118

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000176

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000151

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 20, 2023

This sequence change replaces threonine, which is neutral and polar, with serine, which is neutral and polar, at codon 650 of the PHF21A protein (p.Thr650Ser). This variant is present in population databases (rs141388105, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with PHF21A-related conditions. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt PHF21A protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.073

BayesDel_addAF

Benign

-0.12

BayesDel_noAF

Benign

-0.12

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.098

.;T;T

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.50

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.69

T;T;T

M_CAP

Uncertain

0.11

MetaRNN

Benign

0.26

T;T;T

MetaSVM

Uncertain

0.74

MutationAssessor

Benign

0.55

.;N;.

MutationTaster

Benign

0.99

D;D;D

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.0

N;N;N

REVEL

Uncertain

0.38

Sift

Uncertain

0.0080

D;D;D

Sift4G

Benign

0.12

T;T;.

Polyphen

0.97

D;D;.

Vest4

0.37

MutPred

0.14

.;Loss of phosphorylation at T650 (P = 0.0833);.;

MVP

0.63

MPC

0.51

ClinPred

0.32

GERP RS

4.7

Varity_R

0.27

gMVP

0.57

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

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