Variant 20-54219028-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_002623.4(PFDN4):c.283C>A(p.Gln95Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000509 in 1,376,048 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000051 ( 0 hom. )

Consequence

PFDN4
NM_002623.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.06

Variant links:

Genes affected

PFDN4 (HGNC:8868): (prefoldin subunit 4) This gene encodes a member of the prefoldin beta subunit family. The encoded protein is one of six subunits of prefoldin, a molecular chaperone complex that binds and stabilizes newly synthesized polypeptides, thereby allowing them to fold correctly. The complex, consisting of two alpha and four beta subunits, forms a double beta barrel assembly with six protruding coiled-coils. [provided by RefSeq, Jul 2008]

PFDN4 links:

PFDN4 (HGNC:):

PFDN4 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.108463824).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PFDN4	NM_002623.4 linkuse as main transcript	c.283C>A	p.Gln95Lys	missense_variant	4/4	ENST00000371419.7	NP_002614.2	Q9NQP4
PFDN4	XM_047440198.1 linkuse as main transcript	c.529C>A	p.Gln177Lys	missense_variant	4/4		XP_047296154.1
PFDN4	XM_017027879.2 linkuse as main transcript	c.424C>A	p.Gln142Lys	missense_variant	4/4		XP_016883368.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
PFDN4	ENST00000371419.7 linkuse as main transcript	c.283C>A	p.Gln95Lys	missense_variant	4/4	1	NM_002623.4	ENSP00000360473.2	Q9NQP4
PFDN4	ENST00000441080.2 linkuse as main transcript	n.283C>A		non_coding_transcript_exon_variant	4/6	5		ENSP00000432441.1	E9PQY2
PFDN4	ENST00000487129.1 linkuse as main transcript	n.587C>A		non_coding_transcript_exon_variant	5/5	2
PFDN4	ENST00000493356.5 linkuse as main transcript	n.402C>A		non_coding_transcript_exon_variant	4/4	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000173

AC:

AN:

172926

Hom.:

AF XY:

0.0000322

AC XY:

AN XY:

93310

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:

0.000148

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000509

AC:

AN:

1376048

Hom.:

Cov.:

AF XY:

0.00000879

AC XY:

AN XY:

682336

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:

0.0000536

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000527

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000829

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 06, 2024

The c.283C>A (p.Q95K) alteration is located in exon 4 (coding exon 4) of the PFDN4 gene. This alteration results from a C to A substitution at nucleotide position 283, causing the glutamine (Q) at amino acid position 95 to be replaced by a lysine (K). 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

0.081

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.50

CADD

Benign

DANN

Benign

0.83

DEOGEN2

Benign

0.075

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.031

FATHMM_MKL

Uncertain

0.96

LIST_S2

Benign

0.81

M_CAP

Benign

0.0083

MetaRNN

Benign

0.11

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.89

PrimateAI

Uncertain

0.50

PROVEAN

Benign

-0.35

REVEL

Benign

0.087

Sift

Benign

0.64

Sift4G

Benign

0.79

Polyphen

0.0020

Vest4

0.17

MutPred

0.58

Gain of ubiquitination at Q95 (P = 0.0203);

MVP

0.33

MPC

0.85

ClinPred

0.19

GERP RS

5.6

Varity_R

0.41

gMVP

0.34

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