NM_000209.4:c.670G>C

Variant names:

• chr13-27924519-G-C
• NM_000209.4:c.670G>C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000209.4(PDX1):​c.670G>C​(p.Glu224Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000000687 in 1,455,564 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign 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. E224K) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: PDX1 NM_000209.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.23

Genes affected

PDX1 (HGNC:6107): (pancreatic and duodenal homeobox 1) The protein encoded by this gene is a transcriptional activator of several genes, including insulin, somatostatin, glucokinase, islet amyloid polypeptide, and glucose transporter type 2. The encoded nuclear protein is involved in the early development of the pancreas and plays a major role in glucose-dependent regulation of insulin gene expression. Defects in this gene are a cause of pancreatic agenesis, which can lead to early-onset insulin-dependent diabetes mellitus (IDDM), as well as maturity onset diabetes of the young type 4 (MODY4). [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.27910113).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PDX1	NM_000209.4	c.670G>C	p.Glu224Gln	missense_variant	Exon 2 of 2	ENST00000381033.5	NP_000200.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PDX1	ENST00000381033.5	c.670G>C	p.Glu224Gln	missense_variant	Exon 2 of 2	1	NM_000209.4	ENSP00000370421.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.87e-7 AC: 1 AN: 1455564 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 723848

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: 9.01e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Benign	0.0091	T
BayesDel_noAF	Benign	-0.22
CADD	Benign	22
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.47	T
Eigen	Benign	-0.16
Eigen_PC	Benign	-0.025
FATHMM_MKL	Uncertain	0.97	D
LIST_S2	Benign	0.77	T
M_CAP	Pathogenic	0.41	D
MetaRNN	Benign	0.28	T
MetaSVM	Uncertain	-0.18	T
MutationAssessor	Benign	1.6	L
PrimateAI	Pathogenic	0.80	T
PROVEAN	Benign	-1.1	N
REVEL	Benign	0.23
Sift	Benign	0.046	D
Sift4G	Benign	0.14	T
Polyphen		0.15	B
Vest4		0.16
MutPred		0.30		Gain of catalytic residue at V220 (P = 0.001);
MVP		0.80
MPC		1.0
ClinPred		0.83	D
GERP RS		4.0
Varity_R		0.46
gMVP		0.59

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: chr13-28498656;