4-109912975-C-G

Variant names:

• chr4-109912975-C-G
• rs961372411
• NM_001963.6:c.-361C>G

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_001963.6(EGF):​c.-361C>G variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000181 in 253,914 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 0.00018 (0 hom., cov: 32)
  • Exomes 𝑓: 0.00018 (0 hom.)
• Consequence: EGF NM_001963.6 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.712
• Publications: 0 publications found

Genes affected

EGF (HGNC:3229): (epidermal growth factor) This gene encodes a member of the epidermal growth factor superfamily. The encoded preproprotein is proteolytically processed to generate the 53-amino acid epidermal growth factor peptide. This protein acts a potent mitogenic factor that plays an important role in the growth, proliferation and differentiation of numerous cell types. This protein acts by binding with high affinity to the cell surface receptor, epidermal growth factor receptor. Defects in this gene are the cause of hypomagnesemia type 4. Dysregulation of this gene has been associated with the growth and progression of certain cancers. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed. [provided by RefSeq, Jan 2016]

EGF Gene-Disease associations (from GenCC):

• familial primary hypomagnesemia with normocalciuria and normocalcemia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• renal hypomagnesemia 4

  Inheritance: AD, Unknown Classification: LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).
• BS2: High AC in GnomAd4 at 28 AD,Unknown gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EGF	NM_001963.6	c.-361C>G		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 24	ENST00000265171.10	NP_001954.2
EGF	NM_001963.6	c.-361C>G		5_prime_UTR_variant	Exon 1 of 24	ENST00000265171.10	NP_001954.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EGF	ENST00000265171.10	c.-361C>G		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 24	1	NM_001963.6	ENSP00000265171.5
EGF	ENST00000265171.10	c.-361C>G		5_prime_UTR_variant	Exon 1 of 24	1	NM_001963.6	ENSP00000265171.5

Frequencies

GnomAD3 genomes AF: 0.000184 AC: 28 AN: 152224 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000916

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.000478

GnomAD4 exome AF: 0.000177 AC: 18 AN: 101572 Hom.: 0 Cov.: 0 AF XY: 0.000188 AC XY: 10 AN XY: 53114

African (AFR) AF: 0.000329 AC: 1 AN: 3036

American (AMR) AF: 0.000429 AC: 2 AN: 4660

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 2398

East Asian (EAS) AF: 0.00 AC: 0 AN: 5118

South Asian (SAS) AF: 0.00 AC: 0 AN: 14652

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 4816

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 364

European-Non Finnish (NFE) AF: 0.000212 AC: 13 AN: 61200

Other (OTH) AF: 0.000375 AC: 2 AN: 5328

GnomAD4 genome AF: 0.000184 AC: 28 AN: 152342 Hom.: 0 Cov.: 32 AF XY: 0.000201 AC XY: 15 AN XY: 74490

African (AFR) AF: 0.0000240 AC: 1 AN: 41584

American (AMR) AF: 0.000915 AC: 14 AN: 15302

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

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: 10624

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.000162 AC: 11 AN: 68026

Other (OTH) AF: 0.000473 AC: 1 AN: 2114

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Renal hypomagnesemia 4 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	-0.75
CADD	Benign	7.1
DANN	Benign	0.73
PhyloP100		0.71
PromoterAI		-0.019	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: rs961372411; hg19: chr4-110834131;