rs145637617

Positions:

• chr16-3247221-C-A
• chr16-3247221-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000243.3(MEFV):​c.1382G>T​(p.Arg461Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 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. R461Q) has been classified as Benign.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: MEFV NM_000243.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.108

Genes affected

MEFV (HGNC:6998): (MEFV innate immunity regulator, pyrin) This gene encodes a protein, also known as pyrin or marenostrin, that is an important modulator of innate immunity. Mutations in this gene are associated with Mediterranean fever, a hereditary periodic fever syndrome. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.2889039).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
MEFV	NM_000243.3	c.1382G>T	p.Arg461Leu	missense_variant	5/10	ENST00000219596.6	NP_000234.1
MEFV	NM_001198536.2	c.749G>T	p.Arg250Leu	missense_variant	4/9		NP_001185465.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MEFV	ENST00000219596.6	c.1382G>T	p.Arg461Leu	missense_variant	5/10	1	NM_000243.3	ENSP00000219596.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD3 exomes AF: 0.00000398 AC: 1 AN: 251466 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135908

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 SAS exome AF: 0.0000327

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461856 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 727224

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.17
BayesDel_addAF	Benign	-0.16	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	6.7
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.58	D;.;.;.
Eigen	Benign	-0.50
Eigen_PC	Benign	-0.71
FATHMM_MKL	Benign	0.097	N
LIST_S2	Benign	0.82	T;T;T;T
M_CAP	Benign	0.039	D
MetaRNN	Benign	0.29	T;T;T;T
MetaSVM	Benign	-0.83	T
MutationAssessor	Uncertain	2.7	M;.;.;.
PrimateAI	Benign	0.24	T
PROVEAN	Pathogenic	-4.5	D;D;D;D
REVEL	Benign	0.22
Sift	Benign	0.093	T;T;D;T
Sift4G	Uncertain	0.012	D;T;D;T
Polyphen		0.93	P;.;.;.
Vest4		0.42
MutPred		0.44		Loss of MoRF binding (P = 0.0127);.;.;.;
MVP		0.78
MPC		0.45
ClinPred		0.88	D
GERP RS		-1.8
Varity_R		0.23
gMVP		0.24

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

Publications

LitVar

Other links and lift over

dbSNP: rs145637617; hg19: chr16-3297221;