7-50470354-G-A

Variant names:

• chr7-50470354-G-A
• rs11575494
• NM_001082971.2:c.1042-183C>T

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_001082971.2(DDC):​c.1042-183C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0397 in 152,278 control chromosomes in the GnomAD database, including 254 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency: Genomes: 𝑓 0.040 (254 hom., cov: 33)
• Consequence: DDC NM_001082971.2 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.233
• Publications: 1 publications found

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

ACMG classification

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

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.84).
• BP6: Variant 7-50470354-G-A is Benign according to our data. Variant chr7-50470354-G-A is described in ClinVar as Benign. ClinVar VariationId is 1265874.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.103 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001082971.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DDC	NM_001082971.2	MANE Select	c.1042-183C>T		intron	N/A	NP_001076440.2
	DDC	NM_000790.4		c.1042-183C>T		intron	N/A	NP_000781.2
	DDC	NM_001242886.2		c.928-183C>T		intron	N/A	NP_001229815.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	DDC	ENST00000444124.7	TSL:1 MANE Select	c.1042-183C>T		intron	N/A	ENSP00000403644.2
	DDC	ENST00000357936.9	TSL:1	c.1042-183C>T		intron	N/A	ENSP00000350616.5
	DDC	ENST00000622873.4	TSL:3	c.928-183C>T		intron	N/A	ENSP00000479110.1

Frequencies

GnomAD3 genomes AF: 0.0395 AC: 6014 AN: 152160 Hom.: 251 Cov.: 33

Gnomad AFR AF: 0.105

Gnomad AMI AF: 0.0132

Gnomad AMR AF: 0.0193

Gnomad ASJ AF: 0.00778

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.0141

Gnomad FIN AF: 0.00753

Gnomad MID AF: 0.0158

Gnomad NFE AF: 0.0163

Gnomad OTH AF: 0.0301

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0397 AC: 6040 AN: 152278 Hom.: 254 Cov.: 33 AF XY: 0.0380 AC XY: 2828 AN XY: 74448

African (AFR) AF: 0.105 AC: 4376 AN: 41538

American (AMR) AF: 0.0194 AC: 296 AN: 15296

Ashkenazi Jewish (ASJ) AF: 0.00778 AC: 27 AN: 3472

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5182

South Asian (SAS) AF: 0.0139 AC: 67 AN: 4816

European-Finnish (FIN) AF: 0.00753 AC: 80 AN: 10620

Middle Eastern (MID) AF: 0.0170 AC: 5 AN: 294

European-Non Finnish (NFE) AF: 0.0164 AC: 1113 AN: 68034

Other (OTH) AF: 0.0298 AC: 63 AN: 2116

Alfa AF: 0.0349 Hom.: 29

Bravo AF: 0.0428

Asia WGS AF: 0.0110 AC: 38 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Apr 12, 2021

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.84
CADD	Benign	2.3
DANN	Benign	0.31
PhyloP100		-0.23
Mutation Taster		=100/0	polymorphism (auto)

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

Other links and lift over

dbSNP: rs11575494; hg19: chr7-50538052;