Genetic Variant GUCY2C:p.Cys928Gly (chr12-14619304-A-C) – ACMG Classification: Likely_pathogenic (6 pts)

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PM5PP3_Moderate

The NM_004963.4(GUCY2C):c.2782T>G(p.Cys928Gly) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000688 in 1,452,670 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. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C928R) has been classified as Pathogenic.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

GUCY2C
NM_004963.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.25

Publications

0 publications found

Variant links:

Genes affected

GUCY2C (HGNC:4688): (guanylate cyclase 2C) This gene encodes a transmembrane protein that functions as a receptor for endogenous peptides guanylin and uroguanylin, and the heat-stable E. coli enterotoxin. The encoded protein activates the cystic fibrosis transmembrane conductance regulator. Mutations in this gene are associated with familial diarrhea (autosomal dominant) and meconium ileus (autosomal recessive). [provided by RefSeq, Nov 2016]

GUCY2C links:

PLBD1-AS1 (HGNC:51143): (PLBD1 antisense RNA 1)

PLBD1-AS1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr12-14619304-A-G is described in ClinVar as Pathogenic. ClinVar VariationId is 161159.Status of the report is no_assertion_criteria_provided, 0 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.928

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004963.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GUCY2C	NM_004963.4	MANE Select	c.2782T>G	p.Cys928Gly	missense	Exon 24 of 27	NP_004954.2
	PLBD1-AS1	NR_120465.1		n.499A>C		non_coding_transcript_exon	Exon 5 of 6

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
GUCY2C	ENST00000261170.5	TSL:1 MANE Select	c.2782T>G	p.Cys928Gly	missense	Exon 24 of 27	ENSP00000261170.3
PLBD1-AS1	ENST00000542401.2	TSL:4	n.1050A>C		non_coding_transcript_exon	Exon 4 of 5
PLBD1-AS1	ENST00000660979.1		n.884A>C		non_coding_transcript_exon	Exon 2 of 4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.88e-7

AC:

AN:

1452670

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

723344

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33280

American (AMR)

AF:

0.00

AC:

AN:

44676

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26076

East Asian (EAS)

AF:

0.00

AC:

AN:

39658

South Asian (SAS)

AF:

0.00

AC:

AN:

86064

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5746

European-Non Finnish (NFE)

AF:

9.06e-7

AC:

AN:

1103648

Other (OTH)

AF:

0.00

AC:

AN:

60102

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

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.38

BayesDel_noAF

Pathogenic

0.31

CADD

Pathogenic

(source)

DANN

Uncertain

0.98

DEOGEN2

Pathogenic

0.81

Eigen

Pathogenic

0.89

Eigen_PC

Pathogenic

0.83

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

M_CAP

Uncertain

0.26

MetaRNN

Pathogenic

0.93

MetaSVM

Pathogenic

0.80

MutationAssessor

Uncertain

2.9

PhyloP100

9.2

PrimateAI

Uncertain

0.77

PROVEAN

Pathogenic

-9.3

REVEL

Pathogenic

0.92

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.045

Polyphen

1.0

Vest4

0.83

MutPred

0.74

Gain of catalytic residue at G926 (P = 0)

MVP

0.97

MPC

0.83

ClinPred

1.0

GERP RS

5.3

Varity_R

0.90

gMVP

0.95

Mutation Taster

=11/89

disease causing

(source)

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

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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