rs1127760

Positions:

• chr5-53484287-T-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_013409.3(FST):​c.715T>A​(p.Cys239Ser) 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. 12/21 in silico tools predict a damaging outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FST NM_013409.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.92

Genes affected

FST (HGNC:3971): (follistatin) Follistatin is a single-chain gonadal protein that specifically inhibits follicle-stimulating hormone release. The single FST gene encodes two isoforms, FST317 and FST344 containing 317 and 344 amino acids respectively, resulting from alternative splicing of the precursor mRNA. In a study in which 37 candidate genes were tested for linkage and association with polycystic ovary syndrome (PCOS) or hyperandrogenemia in 150 families, evidence was found for linkage between PCOS and follistatin. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.988

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FST	NM_013409.3	c.715T>A	p.Cys239Ser	missense_variant	4/6	ENST00000256759.8	NP_037541.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FST	ENST00000256759.8	c.715T>A	p.Cys239Ser	missense_variant	4/6	1	NM_013409.3	ENSP00000256759.3
FST	ENST00000396947.7	c.715T>A	p.Cys239Ser	missense_variant	4/6	5		ENSP00000380151.2
FST	ENST00000504226.5	c.331T>A	p.Cys111Ser	missense_variant	2/4	3		ENSP00000426315.1
FST	ENST00000497789.2	c.70T>A	p.Cys24Ser	missense_variant	1/3	2		ENSP00000426971.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.57	D
BayesDel_noAF	Pathogenic	0.59
CADD	Pathogenic	29
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.54	D;.;T
Eigen	Pathogenic	0.79
Eigen_PC	Pathogenic	0.78
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D;D;T
M_CAP	Uncertain	0.19	D
MetaRNN	Pathogenic	0.99	D;D;D
MetaSVM	Pathogenic	0.80	D
MutationAssessor	Pathogenic	4.4	H;H;.
PrimateAI	Pathogenic	0.80	T
PROVEAN	Pathogenic	-8.8	D;D;D
REVEL	Pathogenic	0.86
Sift	Pathogenic	0.0	D;D;D
Sift4G	Uncertain	0.023	D;D;D
Polyphen		1.0	D;.;.
Vest4		0.97
MutPred		0.96		Gain of disorder (P = 0.0056);Gain of disorder (P = 0.0056);.;
MVP		0.98
MPC		2.3
ClinPred		1.0	D
GERP RS		6.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.94
gMVP		1.0

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: rs1127760; hg19: chr5-52780117;