Genetic Variant BDNF:p.Thr2Ser (chr11-27658560-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001143810.2(BDNF):c.251C>G(p.Thr84Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,862 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T84I) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

BDNF
NM_001143810.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 8.00

Publications

0 publications found

Variant links:

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 links:

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

BDNF-AS links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001143810.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BDNF	NM_001709.5	MANE Select	c.5C>G	p.Thr2Ser	missense	Exon 2 of 2	NP_001700.2
BDNF	NM_001143810.2		c.251C>G	p.Thr84Ser	missense	Exon 3 of 3	NP_001137282.1
BDNF	NM_001143809.2		c.92C>G	p.Thr31Ser	missense	Exon 2 of 2	NP_001137281.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
BDNF	ENST00000356660.9	TSL:1 MANE Select	c.5C>G	p.Thr2Ser	missense	Exon 2 of 2	ENSP00000349084.4
BDNF	ENST00000438929.5	TSL:1	c.251C>G	p.Thr84Ser	missense	Exon 3 of 3	ENSP00000414303.1
BDNF	ENST00000395986.6	TSL:1	c.50C>G	p.Thr17Ser	missense	Exon 2 of 2	ENSP00000379309.2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461862

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727234

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111982

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.37

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.040

CADD

Benign

(source)

DANN

Benign

0.91

DEOGEN2

Benign

0.29

Eigen

Uncertain

0.64

Eigen_PC

Pathogenic

0.73

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.021

MetaRNN

Uncertain

0.57

MetaSVM

Benign

-0.63

MutationAssessor

Benign

1.9

PhyloP100

8.0

PrimateAI

Uncertain

0.78

PROVEAN

Benign

0.48

REVEL

Uncertain

0.38

Sift

Pathogenic

0.0

Sift4G

Benign

0.87

Polyphen

0.88

Vest4

0.59

MutPred

0.38

Gain of disorder (P = 0.0319)

MVP

0.84

MPC

1.3

ClinPred

0.92

GERP RS

6.0

Varity_R

0.36

gMVP

0.60

Mutation Taster

=32/68

disease causing

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over