dbSNP rs11575551: DDC:c.*297T>C (chr7-50458565-A-G) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBA1

The NM_000790.4(DDC):c.*297T>C variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0361 in 152,352 control chromosomes in the GnomAD database, including 341 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.036 ( 341 hom., cov: 32)

Failed GnomAD Quality Control

Consequence

DDC
NM_000790.4 3_prime_UTR

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.364

Publications

2 publications found

Variant links:

Genes affected

DDC (HGNC:2719): (dopa decarboxylase) The encoded protein catalyzes the decarboxylation of L-3,4-dihydroxyphenylalanine (DOPA) to dopamine, L-5-hydroxytryptophan to serotonin and L-tryptophan to tryptamine. Defects in this gene are the cause of aromatic L-amino-acid decarboxylase deficiency (AADCD). AADCD deficiency is an inborn error in neurotransmitter metabolism that leads to combined serotonin and catecholamine deficiency. Multiple alternatively spliced transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jun 2011]

DDC Gene-Disease associations (from GenCC):

aromatic L-amino acid decarboxylase deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae), G2P

DDC links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.89).

BP6

Variant 7-50458565-A-G is Benign according to our data. Variant chr7-50458565-A-G is described in ClinVar as Benign. ClinVar VariationId is 360425.Status of the report is criteria_provided_single_submitter, 1 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.121 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000790.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
DDC	NM_001082971.2	MANE Select	c.*297T>C	3_prime_UTR	Exon 15 of 15	NP_001076440.2
DDC	NM_000790.4		c.*297T>C	3_prime_UTR	Exon 15 of 15	NP_000781.2
DDC	NM_001242886.2		c.*297T>C	3_prime_UTR	Exon 14 of 14	NP_001229815.2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
DDC	ENST00000444124.7	TSL:1 MANE Select	c.*297T>C	3_prime_UTR	Exon 15 of 15	ENSP00000403644.2
DDC	ENST00000357936.9	TSL:1	c.*297T>C	3_prime_UTR	Exon 15 of 15	ENSP00000350616.5
DDC	ENST00000897740.1		c.*297T>C	3_prime_UTR	Exon 16 of 16	ENSP00000567799.1

Frequencies

GnomAD3 genomes

AF:

0.0360

AC:

5478

AN:

152234

Hom.:

339

Cov.:

show subpopulations

Gnomad AFR

AF:

0.124

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0169

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00633

Gnomad NFE

AF:

0.000544

Gnomad OTH

AF:

0.0196

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AC:

AN:

Hom.:

Cov.:

AC XY:

AN XY:

African (AFR)

AC:

AN:

American (AMR)

AC:

AN:

Ashkenazi Jewish (ASJ)

AC:

AN:

East Asian (EAS)

AC:

AN:

South Asian (SAS)

AC:

AN:

European-Finnish (FIN)

AC:

AN:

Middle Eastern (MID)

AC:

AN:

European-Non Finnish (NFE)

AC:

AN:

Other (OTH)

AC:

AN:

GnomAD4 genome

AF:

0.0361

AC:

5503

AN:

152352

Hom.:

341

Cov.:

AF XY:

0.0357

AC XY:

2659

AN XY:

74496

show subpopulations

African (AFR)

AF:

0.124

AC:

5163

AN:

41570

American (AMR)

AF:

0.0168

AC:

258

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5186

South Asian (SAS)

AF:

0.000414

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00680

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000544

AC:

AN:

68038

Other (OTH)

AF:

0.0194

AC:

AN:

2116

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

247

494

742

989

1236

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

112

168

224

280

<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:

0.0145

Hom.:

126

Bravo

AF:

0.0410

Asia WGS

AF:

0.00982

AC:

AN:

3478

ClinVar

ClinVar submissions as Germline

Significance:Benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

Deficiency of aromatic-L-amino-acid decarboxylase (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.89

CADD

Benign

0.65

(source)

DANN

Benign

0.41

PhyloP100

-0.36

Mutation Taster

=100/0

polymorphism (auto)

(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

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over