rs143413500

Variant names:

• chr11-72192330-T-C
• rs143413500
• NM_016729.3:c.157T>C

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_Strong BP6 BP7 BS1

The NM_016729.3(FOLR1):​c.157T>C​(p.Leu53Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000242 in 1,613,814 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00027 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00024 (0 hom.)
• Consequence: FOLR1 NM_016729.3 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:2 B:3
• Conservation: PhyloP100: -0.328
• Publications: 1 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: Benign. The variant received -10 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BP6: Variant 11-72192330-T-C is Benign according to our data. Variant chr11-72192330-T-C is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 195316.
• BP7: Synonymous conserved (PhyloP=-0.328 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00027 (41/152034) while in subpopulation NFE AF = 0.000221 (15/68004). AF 95% confidence interval is 0.000135. There are 0 homozygotes in GnomAd4. There are 19 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

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.157T>C	p.Leu53Leu	synonymous	Exon 1 of 4	NP_057941.1
	FOLR1	NM_000802.3		c.157T>C	p.Leu53Leu	synonymous	Exon 2 of 5	NP_000793.1
	FOLR1	NM_016724.3		c.157T>C	p.Leu53Leu	synonymous	Exon 3 of 6	NP_057936.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FOLR1	ENST00000393676.5	TSL:1 MANE Select	c.157T>C	p.Leu53Leu	synonymous	Exon 1 of 4	ENSP00000377281.3
	FOLR1	ENST00000312293.9	TSL:1	c.157T>C	p.Leu53Leu	synonymous	Exon 2 of 5	ENSP00000308137.4
	FOLR1	ENST00000393679.5	TSL:1	c.157T>C	p.Leu53Leu	synonymous	Exon 2 of 5	ENSP00000377284.1

Frequencies

GnomAD3 genomes AF: 0.000270 AC: 41 AN: 152034 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000966

Gnomad AMI AF: 0.00877

Gnomad AMR AF: 0.000197

Gnomad ASJ AF: 0.00288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000221

Gnomad OTH AF: 0.000482

GnomAD2 exomes AF: 0.000227 AC: 57 AN: 251352 AF XY: 0.000258

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000231

Gnomad ASJ exome AF: 0.00189

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000246

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.000239 AC: 350 AN: 1461780 Hom.: 0 Cov.: 31 AF XY: 0.000239 AC XY: 174 AN XY: 727188

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.000224 AC: 10 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00253 AC: 66 AN: 26136

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

South Asian (SAS) AF: 0.0000232 AC: 2 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.000351 AC: 2 AN: 5694

European-Non Finnish (NFE) AF: 0.000226 AC: 251 AN: 1111990

Other (OTH) AF: 0.000315 AC: 19 AN: 60386

GnomAD4 genome AF: 0.000270 AC: 41 AN: 152034 Hom.: 0 Cov.: 32 AF XY: 0.000256 AC XY: 19 AN XY: 74262

African (AFR) AF: 0.0000966 AC: 4 AN: 41402

American (AMR) AF: 0.000197 AC: 3 AN: 15250

Ashkenazi Jewish (ASJ) AF: 0.00288 AC: 10 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

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

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10590

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

European-Non Finnish (NFE) AF: 0.000221 AC: 15 AN: 68004

Other (OTH) AF: 0.000482 AC: 1 AN: 2076

Alfa AF: 0.000285 Hom.: 0

Bravo AF: 0.000363

Asia WGS AF: 0.000289 AC: 1 AN: 3478

EpiCase AF: 0.000327

EpiControl AF: 0.000711

ClinVar

ClinVar submissions as Germline

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	1	Cerebral folate transport deficiency (2)
-	-	1	Inborn genetic diseases (1)
-	1	-	not provided (1)
-	-	1	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	3.3
DANN	Benign	0.52
PhyloP100		-0.33
PromoterAI		0.082	Neutral

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: rs143413500; hg19: chr11-71903374;