19-18175134-G-C

Variant summary

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

The NM_006332.5(IFI30):c.227G>C(p.Arg76Pro) variant causes a missense change. The variant allele was found at a frequency of 0.0000031 in 1,611,514 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: IFI30 NM_006332.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.77

Genes affected

IFI30 (HGNC:5398): (IFI30 lysosomal thiol reductase) The protein encoded by this gene is a lysosomal thiol reductase that at low pH can reduce protein disulfide bonds. The enzyme is expressed constitutively in antigen-presenting cells and induced by gamma-interferon in other cell types. This enzyme has an important role in MHC class II-restricted antigen processing. [provided by RefSeq, Jul 2008]

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, 0.979

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IFI30	NM_006332.5	c.227G>C	p.Arg76Pro	missense_variant	2/7	ENST00000407280.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IFI30	ENST00000407280.4	c.227G>C	p.Arg76Pro	missense_variant	2/7	1	NM_006332.5	P1
IFI30	ENST00000597802.2	c.227G>C	p.Arg76Pro	missense_variant	3/3	3
IFI30	ENST00000600463.1	n.966G>C		non_coding_transcript_exon_variant	1/5	2

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 151986 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1459528 Hom.: 0 Cov.: 36 AF XY: 0.00 AC XY: 0 AN XY: 725858

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: 0.00000360

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 151986 Hom.: 0 Cov.: 32 AF XY: 0.0000135 AC XY: 1 AN XY: 74232

Gnomad4 AFR AF: 0.00

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.97
BayesDel_addAF	Pathogenic	0.43	D
BayesDel_noAF	Pathogenic	0.38
Cadd	Uncertain	25
Dann	Uncertain	0.98
DEOGEN2	Benign	0.34	T;D
Eigen	Uncertain	0.32
Eigen_PC	Benign	0.17
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.87	D;D
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.98	D;D
MetaSVM	Uncertain	0.23	D
MutationTaster	Benign	0.000011	P
PrimateAI	Uncertain	0.61	T
Sift4G	Uncertain	0.0030	D;D
Polyphen		1.0	.;D
Vest4		0.84
MutPred		0.68		Loss of methylation at R76 (P = 0.0322);Loss of methylation at R76 (P = 0.0322);
MVP		0.42
MPC		0.17
ClinPred		0.97	D
GERP RS		4.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.96
gMVP		0.93

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: rs11554159; hg19: chr19-18285944;