chr6-51746853-C-G

Variant names:

• chr6-51746853-C-G
• NM_138694.4:c.9866G>C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_138694.4(PKHD1):​c.9866G>C​(p.Ser3289Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000206 in 1,457,484 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. S3289I) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: PKHD1 NM_138694.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.51

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PKHD1	NM_138694.4	c.9866G>C	p.Ser3289Thr	missense_variant	Exon 59 of 67	ENST00000371117.8	NP_619639.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PKHD1	ENST00000371117.8	c.9866G>C	p.Ser3289Thr	missense_variant	Exon 59 of 67	1	NM_138694.4	ENSP00000360158.3
PKHD1	ENST00000340994.4	c.9866G>C	p.Ser3289Thr	missense_variant	Exon 59 of 61	5		ENSP00000341097.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000206 AC: 3 AN: 1457484 Hom.: 0 Cov.: 29 AF XY: 0.00000276 AC XY: 2 AN XY: 725216

Gnomad4 AFR exome AF: 0.0000599

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: 9.02e-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	0.092
BayesDel_addAF	Benign	-0.018	T
BayesDel_noAF	Benign	-0.26
CADD	Benign	16
DANN	Uncertain	0.99
DEOGEN2	Benign	0.31	T;.
Eigen	Benign	0.083
Eigen_PC	Benign	-0.043
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Benign	0.67	T;T
M_CAP	Uncertain	0.12	D
MetaRNN	Uncertain	0.50	T;T
MetaSVM	Uncertain	0.066	D
MutationAssessor	Uncertain	2.8	M;M
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.8	N;N
REVEL	Uncertain	0.39
Sift	Benign	0.036	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;P
Vest4		0.26
MutPred		0.45		Loss of stability (P = 0.0596);Loss of stability (P = 0.0596);
MVP		0.92
MPC		0.084
ClinPred		0.87	D
GERP RS		4.0
Varity_R		0.071
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: chr6-51611651;