Genetic Variant HYCC2:c.333+37T>A (chr2-201016954-A-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001321623.1(HYCC2):c.333+37T>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000943 in 1,590,554 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000097 ( 0 hom. )

Consequence

HYCC2
NM_001321623.1 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.01

Publications

10 publications found

Variant links:

Genes affected

HYCC2 (HGNC:28593): (hyccin PI4KA lipid kinase complex subunit 2) Predicted to be involved in phosphatidylinositol phosphate biosynthetic process and protein localization to plasma membrane. Predicted to be located in cytosol. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

HYCC2 links:

LOC105373835 (HGNC:):

LOC105373835 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001321623.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
HYCC2	NM_001321623.1	MANE Select	c.333+37T>A	intron	N/A	NP_001308552.1
LOC105373835	NR_187975.1		n.1482A>T	non_coding_transcript_exon	Exon 3 of 3
LOC105373835	NR_187976.1		n.3441A>T	non_coding_transcript_exon	Exon 3 of 3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
HYCC2	ENST00000681958.1	MANE Select	c.333+37T>A	intron	N/A	ENSP00000507218.1
HYCC2	ENST00000418596.7	TSL:1	c.333+37T>A	intron	N/A	ENSP00000393667.2
HYCC2	ENST00000286181.7	TSL:1	n.*86+37T>A	intron	N/A	ENSP00000286181.3

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152034

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000242

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00000825

AC:

AN:

242392

AF XY:

0.00000759

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:

0.0000181

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000973

AC:

AN:

1438520

Hom.:

Cov.:

AF XY:

0.00000978

AC XY:

AN XY:

715914

show subpopulations

African (AFR)

AF:

0.0000305

AC:

AN:

32744

American (AMR)

AF:

0.00

AC:

AN:

42698

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25532

East Asian (EAS)

AF:

0.00

AC:

AN:

39460

South Asian (SAS)

AF:

0.00

AC:

AN:

85354

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51660

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5680

European-Non Finnish (NFE)

AF:

0.0000119

AC:

AN:

1095926

Other (OTH)

AF:

0.00

AC:

AN:

59466

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.496

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152034

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74272

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41378

American (AMR)

AF:

0.00

AC:

AN:

15266

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10588

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67990

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

5260

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.84

CADD

Benign

9.4

(source)

DANN

Benign

0.78

PhyloP100

1.0

Splicing

Name

Calibrated prediction

Score

Prediction

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over