11-72196129-G-C

Variant names:

• chr11-72196129-G-C
• rs752932113
• NM_016729.3:c.726G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_016729.3(FOLR1):​c.726G>C​(p.Trp242Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000197 in 152,154 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. W242R) has been classified as Uncertain significance.

• Frequency: Genomes: 𝑓 0.000020 (0 hom., cov: 33)
• Consequence: FOLR1 NM_016729.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.13
• Publications: 0 publications found

Genes affected

FOLR1 (HGNC:3791): (folate receptor alpha) The protein encoded by this gene is a member of the folate receptor family. Members of this gene family bind folic acid and its reduced derivatives, and transport 5-methyltetrahydrofolate into cells. This gene product is a secreted protein that either anchors to membranes via a glycosyl-phosphatidylinositol linkage or exists in a soluble form. Mutations in this gene have been associated with neurodegeneration due to cerebral folate transport deficiency. Due to the presence of two promoters, multiple transcription start sites, and alternative splicing, multiple transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Oct 2009]

FOLR1 Gene-Disease associations (from GenCC):

• neurodegenerative syndrome due to cerebral folate transport deficiency

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), Orphanet, G2P

ENSG00000204971 (HGNC:58347):

ACMG classification

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=0.10304889).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016729.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FOLR1	NM_016729.3	MANE Select	c.726G>C	p.Trp242Cys	missense	Exon 4 of 4	NP_057941.1
	FOLR1	NM_000802.3		c.726G>C	p.Trp242Cys	missense	Exon 5 of 5	NP_000793.1
	FOLR1	NM_016724.3		c.726G>C	p.Trp242Cys	missense	Exon 6 of 6	NP_057936.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FOLR1	ENST00000393676.5	TSL:1 MANE Select	c.726G>C	p.Trp242Cys	missense	Exon 4 of 4	ENSP00000377281.3
	FOLR1	ENST00000312293.9	TSL:1	c.726G>C	p.Trp242Cys	missense	Exon 5 of 5	ENSP00000308137.4
	FOLR1	ENST00000393679.5	TSL:1	c.726G>C	p.Trp242Cys	missense	Exon 5 of 5	ENSP00000377284.1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152154 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000724

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251312 AF XY: 0.00000736

Gnomad AFR exome AF: 0.0000615

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 33

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152154 Hom.: 0 Cov.: 33 AF XY: 0.0000404 AC XY: 3 AN XY: 74322

African (AFR) AF: 0.0000724 AC: 3 AN: 41416

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.00 AC: 0 AN: 4822

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.31	T
BayesDel_noAF	Benign	-0.51
CADD	Benign	3.5
DANN	Benign	0.59
DEOGEN2	Benign	0.20	T
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.14	N
LIST_S2	Benign	0.46	T
M_CAP	Benign	0.056	D
MetaRNN	Benign	0.10	T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	1.4	L
PhyloP100		-1.1
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-0.47	N
REVEL	Benign	0.10
Sift	Benign	0.18	T
Sift4G	Benign	0.18	T
Polyphen		0.0	B
Vest4		0.30
MutPred		0.53		Gain of loop (P = 0.0851)
MVP		0.31
MPC		0.64
ClinPred		0.031	T
GERP RS		1.6
Varity_R		0.084
gMVP		0.74
Mutation Taster		=94/6	polymorphism

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

Other links and lift over

dbSNP: rs752932113; hg19: chr11-71907173;