Genetic Variant CRISP1:c.67-2A>C (chr6-49852131-T-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PVS1_Strong

The NM_001131.3(CRISP1):c.67-2A>C variant causes a splice acceptor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000969 in 1,609,560 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.00046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000059 ( 0 hom. )

Consequence

CRISP1
NM_001131.3 splice_acceptor, intron

Scores

Splicing: ADA: 0.9999

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.66

Publications

1 publications found

Variant links:

Genes affected

CRISP1 (HGNC:304): (cysteine rich secretory protein 1) Fertilization consists of a sequence of specific cell-cell interactions culminating in the fusion of the sperm and egg plasma membranes. Recognition, binding, and fusion occur through the interaction of complementary molecules that are localized to specific domains of the sperm and egg plasma membranes. In the sperm, the postacrosomal region or equatorial segment is involved in sperm-egg plasma membrane fusion. The protein encoded by this gene is a member of the cysteine-rich secretory protein (CRISP) family. It is expressed in the epididymis, is secreted into the epididymal lumen, and binds to the postacrosomal region of the sperm head, where it plays a role in sperm-egg fusion. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Mar 2011]

CRISP1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.172 fraction of the gene. No cryptic splice site detected. Exon removal is inframe change.

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	Exon rank	MANE	Protein	UniProt
CRISP1	NM_001131.3 link	c.67-2A>C	splice_acceptor_variant, intron_variant	Intron 2 of 7	ENST00000335847.9	NP_001122.2	P54107-1A0A0K0K1I1
CRISP1	NM_001205220.2 link	c.67-2A>C	splice_acceptor_variant, intron_variant	Intron 2 of 7		NP_001192149.1	P54107-1A0A0K0K1I1
CRISP1	NM_170609.2 link	c.67-2A>C	splice_acceptor_variant, intron_variant	Intron 2 of 6		NP_733758.1	P54107-2

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
CRISP1	ENST00000335847.9 link	c.67-2A>C	splice_acceptor_variant, intron_variant	Intron 2 of 7	1	NM_001131.3	ENSP00000338276.4	P54107-1
CRISP1	ENST00000505118.1 link	c.67-2A>C	splice_acceptor_variant, intron_variant	Intron 2 of 7	1		ENSP00000427589.1	P54107-1
CRISP1	ENST00000507853.5 link	c.67-2A>C	splice_acceptor_variant, intron_variant	Intron 2 of 6	1		ENSP00000425020.1	P54107-2
CRISP1	ENST00000329411.9 link	c.67-2A>C	splice_acceptor_variant, intron_variant	Intron 1 of 5	5		ENSP00000331317.5	P54107-2

Frequencies

GnomAD3 genomes

AF:

0.000460

AC:

AN:

152198

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00162

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000131

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:

0.000478

GnomAD2 exomes

AF:

0.000130

AC:

AN:

246966

AF XY:

0.0000450

show subpopulations

Gnomad AFR exome

AF:

0.00179

Gnomad AMR exome

AF:

0.0000893

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:

0.0000590

AC:

AN:

1457244

Hom.:

Cov.:

AF XY:

0.0000317

AC XY:

AN XY:

724616

show subpopulations

African (AFR)

AF:

0.00223

AC:

AN:

33210

American (AMR)

AF:

0.000137

AC:

AN:

43732

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25964

East Asian (EAS)

AF:

0.00

AC:

AN:

39644

South Asian (SAS)

AF:

0.00

AC:

AN:

84974

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53292

Middle Eastern (MID)

AF:

0.000175

AC:

AN:

5712

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1110522

Other (OTH)

AF:

0.0000831

AC:

AN:

60194

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.493

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:

0.000460

AC:

AN:

152316

Hom.:

Cov.:

AF XY:

0.000457

AC XY:

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.00161

AC:

AN:

41576

American (AMR)

AF:

0.000131

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68022

Other (OTH)

AF:

0.000473

AC:

AN:

2114

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

Genome 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

Alfa

AF:

0.000253

Hom.:

Bravo

AF:

0.000620

ESP6500AA

AF:

0.00159

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000165

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.66

BayesDel_noAF

Benign

-0.72

CADD

Benign

(source)

DANN

Benign

0.80

Eigen

Uncertain

0.26

Eigen_PC

Benign

-0.096

FATHMM_MKL

Benign

0.17

PhyloP100

1.7

GERP RS

2.5

Mutation Taster

=93/7

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.77

SpliceAI score (max)

0.97

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.97

Position offset: -2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over