NM_031433.4:c.1374G>C

Variant names:

• chr11-119342609-C-G
• rs145881139
• NM_031433.4:c.1374G>C

Variant summary

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

The NM_031433.4(MFRP):​c.1374G>C​(p.Leu458Phe) variant causes a missense 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. 15/19 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 nucleotide change resulting in the same amino acid substitution has been previously reported as Likely benign in ClinVar.

• Frequency: Genomes: not found (cov: 33)
• Consequence: MFRP NM_031433.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0310
• Publications: 9 publications found

Genes affected

MFRP (HGNC:18121): (membrane frizzled-related protein) This gene encodes a member of the frizzled-related protein family. The encoded protein plays an important role in eye development and mutations in this gene have been associated with nanophthalmos, posterior microphthalmia, retinitis pigmentosa, foveoschisis, and optic disc drusen. The protein is encoded by a bicistronic transcript which also encodes C1q and tumor necrosis factor related protein 5 (C1QTNF5). [provided by RefSeq, Jun 2013]

C1QTNF5 (HGNC:14344): (C1q and TNF related 5) This gene encodes a member of a family of proteins that function as components of basement membranes and may play a role in cell adhesion. Mutations in this gene have been associated with late-onset retinal degeneration. The protein may be encoded by either a bicistronic transcript including sequence from the upstream membrane frizzled-related protein gene (MFRP), or by a monocistronic transcript expressed from an internal promoter. [provided by RefSeq, Jun 2013]

C1QTNF5 Gene-Disease associations (from GenCC):

• late-onset retinal degeneration

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P

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=0.17634696).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_031433.4. 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
	MFRP	NM_031433.4	MANE Select	c.1374G>C	p.Leu458Phe	missense	Exon 11 of 15	NP_113621.1
	C1QTNF5	NM_015645.5		c.-1263G>C		5_prime_UTR	Exon 11 of 15	NP_056460.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MFRP	ENST00000619721.6	TSL:1 MANE Select	c.1374G>C	p.Leu458Phe	missense	Exon 11 of 15	ENSP00000481824.1
	MFRP	ENST00000360167.4	TSL:2	c.1148G>C	p.Cys383Ser	missense	Exon 9 of 10	ENSP00000353291.4
	MFRP	ENST00000449574.7	TSL:5	c.243G>C	p.Leu81Phe	missense	Exon 2 of 4	ENSP00000391664.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.49
CADD	Benign	16
DANN	Uncertain	0.99
Eigen	Benign	-0.30
Eigen_PC	Benign	-0.40
FATHMM_MKL	Benign	0.012	N
LIST_S2	Benign	0.31	T
M_CAP	Benign	0.083	D
MetaRNN	Benign	0.18	T
MetaSVM	Benign	-0.73	T
PhyloP100		-0.031
PrimateAI	Benign	0.28	T
PROVEAN	Benign	-0.11	N
REVEL	Benign	0.14
Sift	Uncertain	0.0090	D
Sift4G	Uncertain	0.011	D
Vest4		0.27
MutPred		0.48		Gain of glycosylation at C383 (P = 0.0071)
MVP		0.20
ClinPred		0.41	T
GERP RS		2.0
PromoterAI		0.021	Neutral
Varity_R		0.19
Mutation Taster		=99/1	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs145881139; hg19: chr11-119213319;