chr11-27660309-C-G

Variant names:

• chr11-27660309-C-G
• rs57083135
• NM_001709.5:c.-21-1724G>C

Variant summary

Our verdict is Benign. The variant received -8 ACMG points: 0P and 8B. BP4_Strong BS2

The NM_001709.5(BDNF):​c.-21-1724G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000012 in 831,222 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: not found (cov: 32)
  • Exomes 𝑓: 0.000012 (0 hom.)
• Consequence: BDNF NM_001709.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.16
• Publications: 3 publications found

Genes affected

BDNF (HGNC:1033): (brain derived neurotrophic factor) This gene encodes a member of the nerve growth factor family of proteins. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed to generate the mature protein. Binding of this protein to its cognate receptor promotes neuronal survival in the adult brain. Expression of this gene is reduced in Alzheimer's, Parkinson's, and Huntington's disease patients. This gene may play a role in the regulation of the stress response and in the biology of mood disorders. [provided by RefSeq, Nov 2015]

BDNF-AS (HGNC:20608): (BDNF antisense RNA)

ACMG classification

Our verdict: Benign. The variant received -8 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BS2: High AC in GnomAdExome4 at 10 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BDNF	NM_001709.5	c.-21-1724G>C		intron_variant	Intron 1 of 1	ENST00000356660.9	NP_001700.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BDNF	ENST00000356660.9	c.-21-1724G>C		intron_variant	Intron 1 of 1	1	NM_001709.5	ENSP00000349084.4
BDNF	ENST00000533131.5	c.-21-1724G>C		intron_variant	Intron 1 of 1	1		ENSP00000432727.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000913 AC: 1 AN: 109512 AF XY: 0.0000167

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: 0.0000225

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000120 AC: 10 AN: 831222 Hom.: 0 Cov.: 11 AF XY: 0.0000191 AC XY: 8 AN XY: 418604

African (AFR) AF: 0.00 AC: 0 AN: 17748

American (AMR) AF: 0.00 AC: 0 AN: 22932

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 13634

East Asian (EAS) AF: 0.00 AC: 0 AN: 10320

South Asian (SAS) AF: 0.00 AC: 0 AN: 64180

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 12266

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3766

European-Non Finnish (NFE) AF: 0.0000153 AC: 10 AN: 654990

Other (OTH) AF: 0.00 AC: 0 AN: 31386

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	0.71
DANN	Benign	0.49
PhyloP100		-1.2

Splicing

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

Other links and lift over

dbSNP: rs57083135; hg19: chr11-27681856;