13-98446171-C-G

Position:

• chr13-98446171-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_005766.4(FARP1):​c.2870C>G​(p.Thr957Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 35)
• Consequence: FARP1 NM_005766.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.91

Genes affected

FARP1 (HGNC:3591): (FERM, ARH/RhoGEF and pleckstrin domain protein 1) This gene encodes a protein containing a FERM (4.2, exrin, radixin, moesin) domain, a Dbl homology domain, and two pleckstrin homology domains. These domains are found in guanine nucleotide exchange factors and proteins that link the cytoskeleton to the cell membrane. The encoded protein functions in neurons to promote dendritic growth. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2013]

STK24 (HGNC:11403): (serine/threonine kinase 24) This gene encodes a serine/threonine protein kinase that functions upstream of mitogen-activated protein kinase (MAPK) signaling. The encoded protein is cleaved into two chains by caspases; the N-terminal fragment (MST3/N) translocates to the nucleus and promotes programmed cells death. There is a pseudogene for this gene on chromosome X. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2013]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.895

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FARP1	NM_005766.4	c.2870C>G	p.Thr957Arg	missense_variant	25/27	ENST00000319562.11
STK24	NM_001032296.4	c.*7002G>C		3_prime_UTR_variant	11/11	ENST00000539966.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FARP1	ENST00000319562.11	c.2870C>G	p.Thr957Arg	missense_variant	25/27	1	NM_005766.4	P1
STK24	ENST00000539966.6	c.*7002G>C		3_prime_UTR_variant	11/11	1	NM_001032296.4	P1

Frequencies

GnomAD3 genomes Cov.: 35

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 35

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 30, 2021

The c.2870C>G (p.T957R) alteration is located in exon 25 (coding exon 24) of the FARP1 gene. This alteration results from a C to G substitution at nucleotide position 2870, causing the threonine (T) at amino acid position 957 to be replaced by an arginine (R). 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	Pathogenic	0.92
BayesDel_addAF	Pathogenic	0.37	D
BayesDel_noAF	Pathogenic	0.29
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.60	.;.;D
Eigen	Pathogenic	0.78
Eigen_PC	Pathogenic	0.77
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	.;D;D
M_CAP	Uncertain	0.15	D
MetaRNN	Pathogenic	0.90	D;D;D
MetaSVM	Uncertain	0.26	D
MutationAssessor	Benign	1.5	.;.;L
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.86	D
PROVEAN	Pathogenic	-5.0	.;.;D
REVEL	Pathogenic	0.79
Sift	Uncertain	0.0010	.;.;D
Sift4G	Pathogenic	0.0010	D;D;D
Polyphen		1.0	D;D;D
Vest4		0.91
MutPred		0.66		Gain of catalytic residue at L992 (P = 0.0057);Gain of catalytic residue at L992 (P = 0.0057);.;
MVP		0.89
MPC		0.92
ClinPred		0.99	D
GERP RS		5.3
Varity_R		0.91
gMVP		0.66

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr13-99098425;