Genetic Variant HCFC1:c.6069-8C>T (chrX-153949394-G-A) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP4_StrongBP6_ModerateBS2

The NM_005334.3(HCFC1):c.6069-8C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000133 in 1,201,452 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 6 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., 2 hem., cov: 23)

Exomes 𝑓: 0.000012 ( 0 hom. 4 hem. )

Consequence

HCFC1
NM_005334.3 splice_region, intron

Scores

Splicing: ADA: 0.00003096

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.396

Variant links:

Genes affected

HCFC1 (HGNC:4839): (host cell factor C1) This gene is a member of the host cell factor family and encodes a protein with five Kelch repeats, a fibronectin-like motif, and six HCF repeats, each of which contains a highly specific cleavage signal. This nuclear coactivator is proteolytically cleaved at one of the six possible sites, resulting in the creation of an N-terminal chain and the corresponding C-terminal chain. The final form of this protein consists of noncovalently bound N- and C-terminal chains. The protein is involved in control of the cell cycle and transcriptional regulation during herpes simplex virus infection. Alternatively spliced variants which encode different protein isoforms have been described; however, not all variants have been fully characterized. [provided by RefSeq, Jul 2008]

HCFC1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -10 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.84).

BP6

Variant X-153949394-G-A is Benign according to our data. Variant chrX-153949394-G-A is described in ClinVar as [Benign]. Clinvar id is 2883031.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High Hemizygotes in GnomAd4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HCFC1	NM_005334.3 link	c.6069-8C>T		splice_region_variant, intron_variant	Intron 25 of 25	ENST00000310441.12	NP_005325.2	P51610-1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
HCFC1	ENST00000310441.12 link	c.6069-8C>T	splice_region_variant, intron_variant	Intron 25 of 25	1	NM_005334.3	ENSP00000309555.7	P51610-1
HCFC1	ENST00000369984.4 link	c.6204-8C>T	splice_region_variant, intron_variant	Intron 25 of 25	5		ENSP00000359001.4	A6NEM2
HCFC1	ENST00000444191.5 link	c.1794-8C>T	splice_region_variant, intron_variant	Intron 9 of 9	5		ENSP00000399589.1	H7C1C4

Frequencies

GnomAD3 genomes

AF:

0.0000270

AC:

AN:

110986

Hom.:

Cov.:

AF XY:

0.0000603

AC XY:

AN XY:

33174

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000566

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000189

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000445

AC:

AN:

179643

Hom.:

AF XY:

0.0000455

AC XY:

AN XY:

65941

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000598

Gnomad SAS 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:

0.0000119

AC:

AN:

1090466

Hom.:

Cov.:

AF XY:

0.0000112

AC XY:

AN XY:

356410

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000431

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000270

AC:

AN:

110986

Hom.:

Cov.:

AF XY:

0.0000603

AC XY:

AN XY:

33174

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000566

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000189

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Methylmalonic acidemia with homocystinuria, type cblX

Benign:1

Dec 30, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

2.3

DANN

Benign

0.73

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000031

dbscSNV1_RF

Benign

0.010

SpliceAI score (max)

0.010

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