X-13589615-C-T

Position:

• chrX-13589615-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015507.4(EGFL6):​c.134C>T​(p.Thr45Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000911 in 1,097,519 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 9.1e-7 (0 hom. 1 hem.)
• Consequence: EGFL6 NM_015507.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.45

Genes affected

EGFL6 (HGNC:3235): (EGF like domain multiple 6) This gene encodes a member of the epidermal growth factor (EGF) repeat superfamily. Members of this superfamily are characterized by the presence of EGF-like repeats and are often involved in the regulation of cell cycle, proliferation, and developmental processes. The gene product contains a signal peptide, suggesting that it is secreted; an EGF repeat region consisting of 4 complete EGF-like repeats and 1 partial EGF-like repeat, 3 of which have a calcium-binding consensus sequence; an arg-gly-asp integrin association motif; and a MAM domain, which is believed to have an adhesive function. This gene is expressed early during development, and its expression has been detected in lung and meningioma tumors. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.12728372).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
EGFL6	NM_015507.4	c.134C>T	p.Thr45Ile	missense_variant	2/12	ENST00000361306.6	NP_056322.2
EGFL6	NM_001167890.2	c.134C>T	p.Thr45Ile	missense_variant	2/12		NP_001161362.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
EGFL6	ENST00000361306.6	c.134C>T	p.Thr45Ile	missense_variant	2/12	1	NM_015507.4	ENSP00000355126	A2
EGFL6	ENST00000380602.3	c.134C>T	p.Thr45Ile	missense_variant	2/12	1		ENSP00000369976	P4

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome AF: 9.11e-7 AC: 1 AN: 1097519 Hom.: 0 Cov.: 29 AF XY: 0.00000276 AC XY: 1 AN XY: 362967

Gnomad4 AFR exome AF: 0.0000379

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 23

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 16, 2023

The c.134C>T (p.T45I) alteration is located in exon 2 (coding exon 2) of the EGFL6 gene. This alteration results from a C to T substitution at nucleotide position 134, causing the threonine (T) at amino acid position 45 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.21	T
BayesDel_noAF	Benign	-0.55
CADD	Benign	12
DANN	Uncertain	0.98
DEOGEN2	Benign	0.016	T;.
FATHMM_MKL	Benign	0.061	N
LIST_S2	Benign	0.35	T;T
M_CAP	Benign	0.0090	T
MetaRNN	Benign	0.13	T;T
MetaSVM	Benign	-0.95	T
MutationAssessor	Benign	2.0	M;M
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.40	T
PROVEAN	Benign	-2.4	N;N
REVEL	Benign	0.12
Sift	Benign	0.096	T;T
Sift4G	Benign	0.21	T;T
Polyphen		0.0060	B;B
Vest4		0.21
MutPred		0.64		Loss of catalytic residue at T45 (P = 0.0543);Loss of catalytic residue at T45 (P = 0.0543);
MVP		0.36
MPC		0.35
ClinPred		0.17	T
GERP RS		4.0
Varity_R		0.069
gMVP		0.26

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-13607734;