Genetic Variant FRMPD4:p.Asp1175His (chrX-12718349-G-C) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001368397.1(FRMPD4):c.3523G>C(p.Asp1175His) variant causes a missense change. The variant allele was found at a frequency of 0.000000911 in 1,098,057 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. 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. D1175N) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 9.1e-7 ( 0 hom. 1 hem. )

Consequence

FRMPD4
NM_001368397.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 6.31

Publications

0 publications found

Variant links:

Genes affected

FRMPD4 (HGNC:29007): (FERM and PDZ domain containing 4) This gene encodes a multi-domain (WW, PDZ, FERM) containing protein. Through its interaction with other proteins (such as PSD-95), it functions as a positive regulator of dendritic spine morphogenesis and density, and is required for the maintenance of excitatory synaptic transmission. [provided by RefSeq, Jan 2010]

FRMPD4 Gene-Disease associations (from GenCC):

X-linked complex neurodevelopmental disorder
Inheritance: XL Classification: DEFINITIVE Submitted by: ClinGen
intellectual disability, X-linked 104
Inheritance: XL Classification: STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae), Illumina
non-syndromic X-linked intellectual disability
Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

FRMPD4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.24119338).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FRMPD4	NM_001368397.1 link	c.3523G>C	p.Asp1175His	missense_variant	Exon 16 of 17	ENST00000675598.1	NP_001355326.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FRMPD4	ENST00000675598.1 link	c.3523G>C	p.Asp1175His	missense_variant	Exon 16 of 17		NM_001368397.1	ENSP00000502607.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

9.11e-7

AC:

AN:

1098057

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

363413

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26398

American (AMR)

AF:

0.00

AC:

AN:

35206

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19384

East Asian (EAS)

AF:

0.00

AC:

AN:

30205

South Asian (SAS)

AF:

0.00

AC:

AN:

54136

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40528

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4137

European-Non Finnish (NFE)

AF:

0.00000119

AC:

AN:

841974

Other (OTH)

AF:

0.00

AC:

AN:

46089

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Dec 01, 2023

CeGaT Center for Human Genetics Tuebingen

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

FRMPD4: PM2, BP4

May 22, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with histidine, which is basic and polar, at codon 1175 of the FRMPD4 protein (p.Asp1175His). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with FRMPD4-related conditions. ClinVar contains an entry for this variant (Variation ID: 1391813). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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

0.12

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.57

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.032

T;T

FATHMM_MKL

Uncertain

0.97

LIST_S2

Uncertain

0.90

D;D

M_CAP

Uncertain

0.14

MetaRNN

Benign

0.24

T;T

MetaSVM

Benign

-1.2

MutationAssessor

Benign

2.0

M;.

PhyloP100

6.3

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.85

N;.

REVEL

Benign

0.073

Sift

Benign

0.093

T;.

Sift4G

Uncertain

0.047

D;T

Vest4

0.32

ClinPred

0.79

GERP RS

5.5

Varity_R

0.22

gMVP

0.28

Mutation Taster

=91/9

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over