Genetic Variant KHDC3L:p.Met1? (chr6-73362732-G-T) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PVS1_ModeratePM2PP5

The NM_001017361.3(KHDC3L):c.3G>T(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,792 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

KHDC3L
NM_001017361.3 start_lost

Scores

Clinical Significance

Pathogenic no assertion criteria provided P:1

Conservation

PhyloP100: 2.50

Publications

3 publications found

Variant links:

Genes affected

KHDC3L (HGNC:33699): (KH domain containing 3 like, subcortical maternal complex member) The protein encoded by this gene belongs to the KHDC1 family, members of which contain an atypical KH domain that may not bind RNA like canonical KH domains. This gene is specifically expressed in the oocytes, and recent studies suggest that it may function as a regulator of genomic imprinting in the oocyte. Mutations in this gene are associated with recurrent biparental complete hydatidiform mole. [provided by RefSeq, Dec 2011]

KHDC3L Gene-Disease associations (from GenCC):

hydatidiform mole, recurrent, 2
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
complete hydatidiform mole
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

KHDC3L links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PVS1

Start lost variant, next in-frame start position is after 1 pathogenic variants. Next in-frame start position is after 14 codons. Genomic position: 73362769. Lost 0.061 part of the original CDS.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 6-73362732-G-T is Pathogenic according to our data. Variant chr6-73362732-G-T is described in ClinVar as [Pathogenic]. Clinvar id is 30926.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KHDC3L	NM_001017361.3 link	c.3G>T	p.Met1?	start_lost	Exon 1 of 3	ENST00000370367.4	NP_001017361.1	Q587J8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KHDC3L	ENST00000370367.4 link	c.3G>T	p.Met1?	start_lost	Exon 1 of 3	1	NM_001017361.3	ENSP00000359392.3		Q587J8

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000398

AC:

AN:

251120

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.00000274

AC:

AN:

1461792

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727204

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86248

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53360

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111990

Other (OTH)

AF:

0.00

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

LINK: link

Submissions by phenotype

Hydatidiform mole, recurrent, 2

Pathogenic:1

Sep 09, 2011

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.58

BayesDel_noAF

Uncertain

0.080

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.018

Eigen

Uncertain

0.31

Eigen_PC

Benign

0.22

FATHMM_MKL

Benign

0.73

LIST_S2

Uncertain

0.90

M_CAP

Pathogenic

0.61

MetaRNN

Pathogenic

0.99

MetaSVM

Benign

-0.80

PhyloP100

2.5

PROVEAN

Benign

-1.5

REVEL

Uncertain

0.33

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

0.95

Vest4

0.94

MutPred

1.0

Loss of disorder (P = 0.0458);

MVP

0.62

ClinPred

0.99

GERP RS

3.5

PromoterAI

-0.13

Neutral

(source)

Varity_R

0.92

gMVP

0.50

Mutation Taster

=19/181

disease causing (ClinVar)

(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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over