rs1057520285

Variant names:

• chr11-72192254-A-C
• rs1057520285
• NM_016729.3:c.81A>C

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 2P and 13B. PM2 BP4_Strong BP6_Very_Strong BP7

The NM_016729.3(FOLR1):​c.81A>C​(p.Ala27Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: FOLR1 NM_016729.3 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: -2.54
• 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 -11 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BP6: Variant 11-72192254-A-C is Benign according to our data. Variant chr11-72192254-A-C is described in ClinVar as Likely_benign. ClinVar VariationId is 377891.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-2.54 with no splicing effect.

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.81A>C	p.Ala27Ala	synonymous	Exon 1 of 4	NP_057941.1
	FOLR1	NM_000802.3		c.81A>C	p.Ala27Ala	synonymous	Exon 2 of 5	NP_000793.1
	FOLR1	NM_016724.3		c.81A>C	p.Ala27Ala	synonymous	Exon 3 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.81A>C	p.Ala27Ala	synonymous	Exon 1 of 4	ENSP00000377281.3
	FOLR1	ENST00000312293.9	TSL:1	c.81A>C	p.Ala27Ala	synonymous	Exon 2 of 5	ENSP00000308137.4
	FOLR1	ENST00000393679.5	TSL:1	c.81A>C	p.Ala27Ala	synonymous	Exon 2 of 5	ENSP00000377284.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions as Germline

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	1	Cerebral folate transport deficiency (1)
-	-	1	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.30
DANN	Benign	0.35
PhyloP100		-2.5
PromoterAI		0.11	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: rs1057520285; hg19: chr11-71903298;