Genetic Variant NM_001935.4:c.1925C>G (chr2-162008624-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001935.4(DPP4):c.1925C>G(p.Ser642Trp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,464 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. S642L) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

DPP4
NM_001935.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 8.01

Publications

0 publications found

Variant links:

Genes affected

DPP4 (HGNC:3009): (dipeptidyl peptidase 4) The DPP4 gene encodes dipeptidyl peptidase 4, which is identical to adenosine deaminase complexing protein-2, and to the T-cell activation antigen CD26. It is an intrinsic type II transmembrane glycoprotein and a serine exopeptidase that cleaves X-proline dipeptides from the N-terminus of polypeptides. Dipeptidyl peptidase 4 is highly involved in glucose and insulin metabolism, as well as in immune regulation. This protein was shown to be a functional receptor for Middle East respiratory syndrome coronavirus (MERS-CoV), and protein modeling suggests that it may play a similar role with SARS-CoV-2, the virus responsible for COVID-19. [provided by RefSeq, Apr 2020]

DPP4 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001935.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DPP4	NM_001935.4	MANE Select	c.1925C>G	p.Ser642Trp	missense	Exon 22 of 26	NP_001926.2
DPP4	NM_001379604.1		c.1922C>G	p.Ser641Trp	missense	Exon 22 of 26	NP_001366533.1	A0A7I2V2X8
DPP4	NM_001379605.1		c.1919C>G	p.Ser640Trp	missense	Exon 22 of 26	NP_001366534.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
DPP4	ENST00000360534.8	TSL:1 MANE Select	c.1925C>G	p.Ser642Trp	missense	Exon 22 of 26	ENSP00000353731.3	P27487
DPP4	ENST00000434918.6	TSL:1	n.*1644C>G		non_coding_transcript_exon	Exon 23 of 27	ENSP00000402259.2	F8WE17
DPP4	ENST00000434918.6	TSL:1	n.*1644C>G		3_prime_UTR	Exon 23 of 27	ENSP00000402259.2	F8WE17

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461464

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727066

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33446

American (AMR)

AF:

0.00

AC:

AN:

44676

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26122

East Asian (EAS)

AF:

0.00

AC:

AN:

39694

South Asian (SAS)

AF:

0.00

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

9.00e-7

AC:

AN:

1111714

Other (OTH)

AF:

0.00

AC:

AN:

60378

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.36

BayesDel_addAF

Benign

-0.018

BayesDel_noAF

Benign

-0.26

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.55

Eigen

Pathogenic

0.92

Eigen_PC

Pathogenic

0.90

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Pathogenic

0.98

M_CAP

Benign

0.034

MetaRNN

Uncertain

0.68

MetaSVM

Benign

-0.70

MutationAssessor

Uncertain

2.8

PhyloP100

8.0

PrimateAI

Uncertain

0.53

PROVEAN

Pathogenic

-4.6

REVEL

Uncertain

0.38

Sift

Uncertain

0.0020

Sift4G

Uncertain

0.0090

Polyphen

1.0

Vest4

0.60

MutPred

0.56

Loss of glycosylation at S642 (P = 0.0055)

MVP

0.79

MPC

0.69

ClinPred

0.99

GERP RS

5.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.74

gMVP

0.78

Mutation Taster

=69/31

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.44

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.44

Position offset: 37

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over