NM_018255.4:c.375A>C

Variant names:

• chr18-36138356-A-C
• rs558363966
• NM_018255.4:c.375A>C

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_Strong BP6_Very_Strong BP7 BS1

The NM_018255.4(ELP2):​c.375A>C​(p.Ala125Ala) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000502 in 1,614,120 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 Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.000033 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000052 (0 hom.)
• Consequence: ELP2 NM_018255.4 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -0.766
• Publications: 0 publications found

Genes affected

ELP2 (HGNC:18248): (elongator acetyltransferase complex subunit 2) The protein encoded by this gene is a core subunit of the elongator complex, a histone acetyltransferase complex that associates with RNA polymerase II. In addition to histone acetylation, the encoded protein effects transcriptional elongation and may help remodel chromatin. [provided by RefSeq, May 2016]

ELP2 Gene-Disease associations (from GenCC):

• intellectual disability, autosomal recessive 58

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Benign. The variant received -17 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BP6: Variant 18-36138356-A-C is Benign according to our data. Variant chr18-36138356-A-C is described in ClinVar as Likely_benign. ClinVar VariationId is 745201.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-0.766 with no splicing effect.
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0000328 (5/152322) while in subpopulation SAS AF = 0.000828 (4/4830). AF 95% confidence interval is 0.000282. There are 0 homozygotes in GnomAd4. There are 3 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018255.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ELP2	NM_018255.4	MANE Select	c.375A>C	p.Ala125Ala	synonymous	Exon 4 of 22	NP_060725.1	Q6IA86-1
	ELP2	NM_001242875.3		c.375A>C	p.Ala125Ala	synonymous	Exon 4 of 23	NP_001229804.1	Q6IA86-6
	ELP2	NM_001324466.2		c.375A>C	p.Ala125Ala	synonymous	Exon 4 of 22	NP_001311395.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ELP2	ENST00000358232.11	TSL:1 MANE Select	c.375A>C	p.Ala125Ala	synonymous	Exon 4 of 22	ENSP00000350967.6	Q6IA86-1
	ELP2	ENST00000423854.6	TSL:1	c.375A>C	p.Ala125Ala	synonymous	Exon 4 of 19	ENSP00000391202.2	Q6IA86-7
	ELP2	ENST00000542824.5	TSL:1	c.375A>C	p.Ala125Ala	synonymous	Exon 4 of 20	ENSP00000443800.1	Q6IA86-2

Frequencies

GnomAD3 genomes AF: 0.0000329 AC: 5 AN: 152204 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000827

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.000167 AC: 42 AN: 251446 AF XY: 0.000169

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000163

GnomAD4 exome AF: 0.0000520 AC: 76 AN: 1461798 Hom.: 0 Cov.: 34 AF XY: 0.0000605 AC XY: 44 AN XY: 727200

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26132

East Asian (EAS) AF: 0.00 AC: 0 AN: 39690

South Asian (SAS) AF: 0.000788 AC: 68 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5766

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111946

Other (OTH) AF: 0.000132 AC: 8 AN: 60392

GnomAD4 genome AF: 0.0000328 AC: 5 AN: 152322 Hom.: 0 Cov.: 33 AF XY: 0.0000403 AC XY: 3 AN XY: 74482

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

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5184

South Asian (SAS) AF: 0.000828 AC: 4 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10618

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68032

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.0000658 Hom.: 0

Bravo AF: 0.00000756

Asia WGS AF: 0.00260 AC: 9 AN: 3478

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	-	2	not provided (2)
-	-	1	ELP2-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.073
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.13
DANN	Benign	0.17
PhyloP100		-0.77
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=100/0	polymorphism

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: rs558363966; hg19: chr18-33718319;