rs1555895100

Positions:

• chrX-12690234-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001368397.1(FRMPD4):​c.721G>C​(p.Gly241Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: FRMPD4 NM_001368397.1 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 2.62

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]

ACMG classification

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=0.24849036).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FRMPD4	NM_001368397.1	c.721G>C	p.Gly241Arg	missense_variant	8/17	ENST00000675598.1	NP_001355326.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FRMPD4	ENST00000675598.1	c.721G>C	p.Gly241Arg	missense_variant	8/17		NM_001368397.1	ENSP00000502607	P2

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 26

GnomAD4 genome Cov.: 23

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 19, 2024

The c.721G>C (p.G241R) alteration is located in exon 8 (coding exon 8) of the FRMPD4 gene. This alteration results from a G to C substitution at nucleotide position 721, causing the glycine (G) at amino acid position 241 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Center for Pediatric Genomic Medicine, Children's Mercy Hospital and Clinics

Jun 22, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.68
BayesDel_addAF	Benign	-0.042	T
BayesDel_noAF	Benign	-0.30
CADD	Uncertain	24
DANN	Benign	0.95
DEOGEN2	Benign	0.033	T;T
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Pathogenic	0.47	D
MetaRNN	Benign	0.25	T;T
MetaSVM	Benign	-0.90	T
MutationAssessor	Benign	-0.81	N;.
MutationTaster	Benign	0.85	D
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-0.86	N;.
REVEL	Uncertain	0.31
Sift	Benign	0.34	T;.
Sift4G	Benign	0.34	T;T
Polyphen		0.0060	B;.
Vest4		0.48
MutPred		0.40		Gain of methylation at K240 (P = 0.0672);.;
MVP		0.83
MPC		1.8
ClinPred		0.63	D
GERP RS		3.5
Varity_R		0.53
gMVP		0.61

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

Other links and lift over

dbSNP: rs1555895100; hg19: chrX-12708353;