chr18-47176216-A-T

Position:

• chr18-47176216-A-T

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_016097.5(IER3IP1):​c.62T>A​(p.Val21Glu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. V21G) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: IER3IP1 NM_016097.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.17

Genes affected

IER3IP1 (HGNC:18550): (immediate early response 3 interacting protein 1) This gene encodes a small protein that is localized to the endoplasmic reticulum (ER) and may play a role in the ER stress response by mediating cell differentiation and apoptosis. Transcription of this gene is regulated by tumor necrosis factor alpha and specificity protein 1 (Sp1). Mutations in this gene may play a role in microcephaly, epilepsy, and diabetes syndrome (MEDS), and a pseudogene of this gene is located on the long arm of chromosome 12. [provided by RefSeq, Dec 2011]

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.952

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IER3IP1	NM_016097.5	c.62T>A	p.Val21Glu	missense_variant	1/3	ENST00000256433.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IER3IP1	ENST00000256433.6	c.62T>A	p.Val21Glu	missense_variant	1/3	1	NM_016097.5	P1
IER3IP1	ENST00000639845.1	c.62T>A	p.Val21Glu	missense_variant	1/2	2

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1454618 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 722954

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 34

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.35
CADD	Pathogenic	32
DANN	Uncertain	0.99
DEOGEN2	Pathogenic	0.82	D;.
Eigen	Uncertain	0.52
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.89	D;D
M_CAP	Pathogenic	0.90	D
MetaRNN	Pathogenic	0.95	D;D
MetaSVM	Uncertain	0.34	D
MutationTaster	Benign	1.0	D
PrimateAI	Pathogenic	0.84	D
PROVEAN	Pathogenic	-5.6	D;.
REVEL	Pathogenic	0.92
Sift	Pathogenic	0.0	D;.
Sift4G	Uncertain	0.0020	D;.
Polyphen		0.95	P;.
Vest4		0.89
MutPred		0.81		Loss of catalytic residue at E24 (P = 0.1921);Loss of catalytic residue at E24 (P = 0.1921);
MVP		0.84
MPC		0.36
ClinPred		1.0	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.8
Varity_R		0.98
gMVP		0.97

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: rs387907011; hg19: chr18-44702587;