chr16-67658575-G-A

Variant names:

Variant summary

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

The NM_001082486.2(ACD):c.809C>T(p.Pro270Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000191 in 1,570,272 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P270S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000020 ( 0 hom. )

Consequence

ACD
NM_001082486.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.337

Publications

0 publications found

Variant links:

Genes affected

ACD (HGNC:25070): (ACD shelterin complex subunit and telomerase recruitment factor) This gene encodes a protein that is involved in telomere function. This protein is one of six core proteins in the telosome/shelterin telomeric complex, which functions to maintain telomere length and to protect telomere ends. Through its interaction with other components, this protein plays a key role in the assembly and stabilization of this complex, and it mediates the access of telomerase to the telomere. Multiple transcript variants encoding different isoforms have been found for this gene. This gene, which is also referred to as TPP1, is distinct from the unrelated TPP1 gene on chromosome 11, which encodes tripeptidyl-peptidase I. [provided by RefSeq, Jul 2008]

ACD Gene-Disease associations (from GenCC):

dyskeratosis congenita, autosomal dominant 6
Inheritance: AR, AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P
hereditary isolated aplastic anemia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Hoyeraal-Hreidarsson syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACD links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ACD	NM_001082486.2 link	c.809C>T	p.Pro270Leu	missense_variant	Exon 9 of 12	ENST00000620761.6	NP_001075955.2	Q96AP0-3
ACD	NM_022914.3 link	c.800C>T	p.Pro267Leu	missense_variant	Exon 9 of 12		NP_075065.3	Q96AP0-2
ACD	NM_001410884.1 link	c.742+145C>T		intron_variant	Intron 8 of 10		NP_001397813.1
ACD	XR_429728.4 link	n.798+145C>T		intron_variant	Intron 8 of 8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ACD	ENST00000620761.6 link	c.809C>T	p.Pro270Leu	missense_variant	Exon 9 of 12	1	NM_001082486.2	ENSP00000478084.1		Q96AP0-3

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152156

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000139

AC:

AN:

216094

AF XY:

0.0000174

show subpopulations

Gnomad AFR exome

AF:

0.0000628

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:

0.0000204

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000197

AC:

AN:

1418116

Hom.:

Cov.:

AF XY:

0.0000271

AC XY:

AN XY:

700314

show subpopulations

African (AFR)

AF:

0.0000308

AC:

AN:

32498

American (AMR)

AF:

0.00

AC:

AN:

40600

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

22770

East Asian (EAS)

AF:

0.00

AC:

AN:

39344

South Asian (SAS)

AF:

0.00

AC:

AN:

78596

European-Finnish (FIN)

AF:

0.00

AC:

AN:

51468

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5532

European-Non Finnish (NFE)

AF:

0.0000239

AC:

AN:

1088902

Other (OTH)

AF:

0.0000171

AC:

AN:

58406

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.480

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:

0.0000131

AC:

AN:

152156

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74324

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41416

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68016

Other (OTH)

AF:

0.00

AC:

AN:

2088

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

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:

0.0000658

Hom.:

Bravo

AF:

0.0000189

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

May 15, 2024

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The p.P356L variant (also known as c.1067C>T), located in coding exon 9 of the ACD gene, results from a C to T substitution at nucleotide position 1067. The proline at codon 356 is replaced by leucine, an amino acid with similar properties. This amino acid position is conserved. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Dyskeratosis congenita, autosomal dominant 6

Uncertain:1

Jul 29, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 356 of the ACD protein (p.Pro356Leu). This variant is present in population databases (no rsID available, gnomAD 0.007%). This variant has not been reported in the literature in individuals affected with ACD-related conditions. ClinVar contains an entry for this variant (Variation ID: 572998). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt ACD protein function with a negative predictive value of 80%. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.089

BayesDel_addAF

Benign

-0.42

BayesDel_noAF

Benign

-0.66

CADD

Benign

(source)

DANN

Benign

0.83

DEOGEN2

Uncertain

0.48

.;T;T;T;T;.

Eigen

Benign

-0.87

Eigen_PC

Benign

-0.88

FATHMM_MKL

Benign

0.38

LIST_S2

Benign

0.59

T;T;.;T;T;.

M_CAP

Benign

0.032

MetaRNN

Benign

0.072

T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.41

.;N;.;.;.;.

PhyloP100

0.34

PrimateAI

Benign

0.37

REVEL

Benign

0.049

Sift4G

Uncertain

0.0060

.;D;D;.;D;.

Polyphen

0.0

.;B;.;.;.;B

Vest4

0.078, 0.10, 0.10

MutPred

0.29

.;Loss of glycosylation at P356 (P = 0.0015);.;.;.;.;

MVP

0.40

MPC

0.095

ClinPred

0.041

GERP RS

2.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.040

gMVP

0.21

Mutation Taster

=92/8

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.22

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.22

Position offset: -13

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

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over