Genetic Variant DENND6B:p.His502Tyr (chr22-50312579-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001001794.4(DENND6B):c.1504C>T(p.His502Tyr) variant causes a missense change. The variant allele was found at a frequency of 0.0000157 in 1,591,310 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

DENND6B
NM_001001794.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.68

Publications

0 publications found

Variant links:

Genes affected

DENND6B (HGNC:32690): (DENN domain containing 6B) Enables guanyl-nucleotide exchange factor activity. Predicted to be involved in regulation of catalytic activity. Predicted to be located in cytosol. Predicted to be active in recycling endosome. [provided by Alliance of Genome Resources, Apr 2022]

DENND6B links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.22751945).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DENND6B	NM_001001794.4 link	c.1504C>T	p.His502Tyr	missense_variant	Exon 18 of 20	ENST00000413817.8	NP_001001794.3	Q8NEG7
DENND6B	XM_011530692.4 link	c.1666C>T	p.His556Tyr	missense_variant	Exon 19 of 21		XP_011528994.1
DENND6B	XM_005261914.5 link	c.1651C>T	p.His551Tyr	missense_variant	Exon 19 of 21		XP_005261971.1
DENND6B	XM_011530693.4 link	c.1519C>T	p.His507Tyr	missense_variant	Exon 18 of 20		XP_011528995.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DENND6B	ENST00000413817.8 link	c.1504C>T	p.His502Tyr	missense_variant	Exon 18 of 20	1	NM_001001794.4	ENSP00000391524.2		Q8NEG7
DENND6B	ENST00000495607.5 link	n.2023C>T		non_coding_transcript_exon_variant	Exon 15 of 17	2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152082

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000964

AC:

AN:

207556

AF XY:

0.00000881

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000654

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000146

AC:

AN:

1439228

Hom.:

Cov.:

AF XY:

0.0000140

AC XY:

AN XY:

714006

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33064

American (AMR)

AF:

0.000120

AC:

AN:

41682

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25744

East Asian (EAS)

AF:

0.00

AC:

AN:

38606

South Asian (SAS)

AF:

0.00

AC:

AN:

83352

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49958

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5730

European-Non Finnish (NFE)

AF:

0.0000136

AC:

AN:

1101640

Other (OTH)

AF:

0.0000168

AC:

AN:

59452

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152082

Hom.:

Cov.:

AF XY:

0.0000404

AC XY:

AN XY:

74278

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41388

American (AMR)

AF:

0.000262

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10600

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68004

Other (OTH)

AF:

0.00

AC:

AN:

2086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.450

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 17, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1504C>T (p.H502Y) alteration is located in exon 18 (coding exon 18) of the DENND6B gene. This alteration results from a C to T substitution at nucleotide position 1504, causing the histidine (H) at amino acid position 502 to be replaced by a tyrosine (Y). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.10

BayesDel_addAF

Benign

-0.26

BayesDel_noAF

Benign

-0.41

CADD

Benign

(source)

DANN

Uncertain

0.98

DEOGEN2

Benign

0.030

Eigen

Benign

-0.32

Eigen_PC

Benign

-0.13

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.81

M_CAP

Benign

0.020

MetaRNN

Benign

0.23

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.6

PhyloP100

4.7

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-0.94

REVEL

Benign

0.071

Sift

Benign

0.47

Sift4G

Benign

0.47

Polyphen

0.0010

Vest4

0.41

MutPred

0.59

Loss of disorder (P = 0.0433);

MVP

0.41

MPC

0.13

ClinPred

0.21

GERP RS

4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.092

gMVP

0.47

Mutation Taster

=78/22

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

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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chr22-50312579-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over