11-72192218-G-T

Variant names:

• chr11-72192218-G-T
• rs200261943
• NM_016729.3:c.45G>T

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.45G>T​(p.Trp15Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,614,150 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000016 (0 hom.)
• Consequence: FOLR1 NM_016729.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: 0.759
• Publications: 2 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=0.14036003).

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FOLR1	NM_016729.3	MANE Select	c.45G>T	p.Trp15Cys	missense	Exon 1 of 4	NP_057941.1	P15328
	FOLR1	NM_000802.3		c.45G>T	p.Trp15Cys	missense	Exon 2 of 5	NP_000793.1	P15328
	FOLR1	NM_016724.3		c.45G>T	p.Trp15Cys	missense	Exon 3 of 6	NP_057936.1	P15328

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FOLR1	ENST00000393676.5	TSL:1 MANE Select	c.45G>T	p.Trp15Cys	missense	Exon 1 of 4	ENSP00000377281.3	P15328
	FOLR1	ENST00000312293.9	TSL:1	c.45G>T	p.Trp15Cys	missense	Exon 2 of 5	ENSP00000308137.4	P15328
	FOLR1	ENST00000393679.5	TSL:1	c.45G>T	p.Trp15Cys	missense	Exon 2 of 5	ENSP00000377284.1	P15328

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152152 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

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: 0.0000147

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000119 AC: 3 AN: 251416 AF XY: 0.0000147

Gnomad AFR exome AF: 0.00

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: 0.0000264

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000164 AC: 24 AN: 1461880 Hom.: 0 Cov.: 31 AF XY: 0.0000179 AC XY: 13 AN XY: 727244

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000207 AC: 23 AN: 1112000

Other (OTH) AF: 0.0000166 AC: 1 AN: 60396

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152270 Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1 AN XY: 74460

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 41560

American (AMR) AF: 0.00 AC: 0 AN: 15276

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4820

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2112

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.000108 Hom.: 0

Bravo AF: 0.00000756

ExAC AF: 0.0000247 AC: 3

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions as Germline

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Cerebral folate transport deficiency (1)
-	1	-	Inborn genetic diseases (1)
-	1	-	not provided (1)
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	13
DANN	Benign	0.78
DEOGEN2	Uncertain	0.54	D
Eigen	Benign	-0.88
Eigen_PC	Benign	-0.85
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.51	T
M_CAP	Benign	0.040	D
MetaRNN	Benign	0.14	T
MetaSVM	Benign	-0.94	T
MutationAssessor	Benign	0.81	L
PhyloP100		0.76
PrimateAI	Benign	0.41	T
PROVEAN	Uncertain	-3.6	D
REVEL	Benign	0.16
Sift	Benign	0.075	T
Sift4G	Benign	0.16	T
Polyphen		0.0010	B
Vest4		0.21
MutPred		0.82		Loss of MoRF binding (P = 0.0139)
MVP		0.59
MPC		1.0
ClinPred		0.065	T
GERP RS		0.13
PromoterAI		0.027	Neutral
Varity_R		0.13
gMVP		0.74
Mutation Taster		=91/9	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.060		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: rs200261943; hg19: chr11-71903262;