NM_000243.3:c.*701G>A

Variant names:

• chr16-3242440-C-T
• rs368896227
• NM_000243.3:c.*701G>A

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_000243.3(MEFV):​c.*701G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00471 in 150,846 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 Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.0048 (0 hom., cov: 29)
  • Exomes 𝑓: 0.0012 (0 hom.)
• Consequence: MEFV NM_000243.3 3_prime_UTR
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.785
• Publications: 0 publications found

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]

MEFV Gene-Disease associations (from GenCC):

• familial Mediterranean fever

  Inheritance: AD, AR, SD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Myriad Women’s Health, ClinGen
• autosomal recessive familial Mediterranean fever

  Inheritance: AR Classification: DEFINITIVE Submitted by: G2P
• familial Mediterranean fever, autosomal dominant

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.98).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MEFV	NM_000243.3	c.*701G>A		3_prime_UTR_variant	Exon 10 of 10	ENST00000219596.6	NP_000234.1
MEFV	NM_001198536.2	c.*1251G>A		3_prime_UTR_variant	Exon 9 of 9		NP_001185465.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MEFV	ENST00000219596.6	c.*701G>A		3_prime_UTR_variant	Exon 10 of 10	1	NM_000243.3	ENSP00000219596.1

Frequencies

GnomAD3 genomes AF: 0.00476 AC: 702 AN: 147350 Hom.: 0 Cov.: 29

Gnomad AFR AF: 0.0142

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00407

Gnomad ASJ AF: 0.00817

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000217

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00775

Gnomad NFE AF: 0.000449

Gnomad OTH AF: 0.00791

GnomAD4 exome AF: 0.00117 AC: 4 AN: 3432 Hom.: 0 Cov.: 0 AF XY: 0.000996 AC XY: 2 AN XY: 2008

African (AFR) AF: 0.00 AC: 0 AN: 14

American (AMR) AF: 0.00688 AC: 3 AN: 436

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 36

East Asian (EAS) AF: 0.00 AC: 0 AN: 42

South Asian (SAS) AF: 0.00 AC: 0 AN: 974

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 98

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1718

Other (OTH) AF: 0.00893 AC: 1 AN: 112

GnomAD4 genome AF: 0.00480 AC: 707 AN: 147414 Hom.: 0 Cov.: 29 AF XY: 0.00494 AC XY: 355 AN XY: 71872

African (AFR) AF: 0.0143 AC: 570 AN: 39926

American (AMR) AF: 0.00407 AC: 60 AN: 14760

Ashkenazi Jewish (ASJ) AF: 0.00817 AC: 28 AN: 3428

East Asian (EAS) AF: 0.00 AC: 0 AN: 4884

South Asian (SAS) AF: 0.000218 AC: 1 AN: 4592

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 9800

Middle Eastern (MID) AF: 0.00826 AC: 2 AN: 242

European-Non Finnish (NFE) AF: 0.000449 AC: 30 AN: 66846

Other (OTH) AF: 0.00786 AC: 16 AN: 2036

Alfa AF: 0.000986 Hom.: 0

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Familial Mediterranean fever Uncertain:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.98
CADD	Benign	0.66
DANN	Benign	0.31
PhyloP100		-0.79

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: rs368896227; hg19: chr16-3292440; COSMIC: COSV54824392; COSMIC: COSV54824392;