6-51867820-C-T

Variant names:

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_138694.4(PKHD1):c.7733+43G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0102 in 1,576,824 control chromosomes in the GnomAD database, including 123 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0088 ( 10 hom., cov: 33)

Exomes 𝑓: 0.010 ( 113 hom. )

Consequence

PKHD1
NM_138694.4 intron

Scores

Clinical Significance

Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 0.386

Variant links:

Genes affected

PKHD1 (HGNC:9016): (PKHD1 ciliary IPT domain containing fibrocystin/polyductin) The protein encoded by this gene is predicted to have a single transmembrane (TM)-spanning domain and multiple copies of an immunoglobulin-like plexin-transcription-factor domain. Alternative splicing results in two transcript variants encoding different isoforms. Other alternatively spliced transcripts have been described, but the full length sequences have not been determined. Several of these transcripts are predicted to encode truncated products which lack the TM and may be secreted. Mutations in this gene cause autosomal recessive polycystic kidney disease, also known as polycystic kidney and hepatic disease-1. [provided by RefSeq, Jul 2008]

PKHD1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.85).

BP6

Variant 6-51867820-C-T is Benign according to our data. Variant chr6-51867820-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 262413.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-51867820-C-T is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.0088 (1340/152242) while in subpopulation NFE AF= 0.0133 (907/68002). AF 95% confidence interval is 0.0126. There are 10 homozygotes in gnomad4. There are 619 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 10 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PKHD1	NM_138694.4 link	c.7733+43G>A		intron_variant	Intron 48 of 66	ENST00000371117.8	NP_619639.3	P08F94-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PKHD1	ENST00000371117.8 link	c.7733+43G>A		intron_variant	Intron 48 of 66	1	NM_138694.4	ENSP00000360158.3		P08F94-1
PKHD1	ENST00000340994.4 link	c.7733+43G>A		intron_variant	Intron 48 of 60	5		ENSP00000341097.4		P08F94-2

Frequencies

GnomAD3 genomes

AF:

0.00882

AC:

1342

AN:

152124

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00154

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00551

Gnomad ASJ

AF:

0.0303

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00228

Gnomad FIN

AF:

0.0135

Gnomad MID

AF:

0.0190

Gnomad NFE

AF:

0.0134

Gnomad OTH

AF:

0.0100

GnomAD3 exomes

AF:

0.0107

AC:

2671

AN:

248540

Hom.:

AF XY:

0.0110

AC XY:

1483

AN XY:

134746

show subpopulations

Gnomad AFR exome

AF:

0.00107

Gnomad AMR exome

AF:

0.00568

Gnomad ASJ exome

AF:

0.0275

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00299

Gnomad FIN exome

AF:

0.0156

Gnomad NFE exome

AF:

0.0149

Gnomad OTH exome

AF:

0.0142

GnomAD4 exome

AF:

0.0104

AC:

14749

AN:

1424582

Hom.:

113

Cov.:

AF XY:

0.0105

AC XY:

7431

AN XY:

711078

show subpopulations

Gnomad4 AFR exome

AF:

0.00144

Gnomad4 AMR exome

AF:

0.00579

Gnomad4 ASJ exome

AF:

0.0265

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00313

Gnomad4 FIN exome

AF:

0.0142

Gnomad4 NFE exome

AF:

0.0111

Gnomad4 OTH exome

AF:

0.0112

GnomAD4 genome

AF:

0.00880

AC:

1340

AN:

152242

Hom.:

Cov.:

AF XY:

0.00831

AC XY:

619

AN XY:

74444

show subpopulations

Gnomad4 AFR

AF:

0.00154

Gnomad4 AMR

AF:

0.00550

Gnomad4 ASJ

AF:

0.0303

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00228

Gnomad4 FIN

AF:

0.0135

Gnomad4 NFE

AF:

0.0133

Gnomad4 OTH

AF:

0.00994

Alfa

AF:

0.0101

Hom.:

Bravo

AF:

0.00822

Asia WGS

AF:

0.00289

AC:

AN:

3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Jul 14, 2018

GeneDx

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified

Benign:1

PreventionGenetics, part of Exact Sciences

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Autosomal recessive polycystic kidney disease

Benign:1

Apr 14, 2018

Natera, Inc.

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.85

CADD

Benign

2.6

DANN

Benign

0.62

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over