NM_000621.5:c.74C>A

Variant names:

• chr13-46895833-G-T
• rs1805055
• NM_000621.5:c.74C>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NM_000621.5(HTR2A):​c.74C>A​(p.Thr25Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0216 in 1,614,066 control chromosomes in the GnomAD database, including 410 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.016 (27 hom., cov: 32)
  • Exomes 𝑓: 0.022 (383 hom.)
• Consequence: HTR2A NM_000621.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.85
• Publications: 34 publications found

Genes affected

HTR2A (HGNC:5293): (5-hydroxytryptamine receptor 2A) This gene encodes one of the receptors for serotonin, a neurotransmitter with many roles. Mutations in this gene are associated with susceptibility to schizophrenia and obsessive-compulsive disorder, and are also associated with response to the antidepressant citalopram in patients with major depressive disorder (MDD). MDD patients who also have a mutation in intron 2 of this gene show a significantly reduced response to citalopram as this antidepressant downregulates expression of this gene. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2009]

ENSG00000301465 (HGNC:):

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.0022446513).
• BS1: Variant frequency is greater than expected in population sas. GnomAd4 allele frequency = 0.0164 (2505/152298) while in subpopulation SAS AF = 0.0263 (127/4824). AF 95% confidence interval is 0.0226. There are 27 homozygotes in GnomAd4. There are 1248 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High AC in GnomAd4 at 2505 AD gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000621.5. 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
	HTR2A	NM_000621.5	MANE Select	c.74C>A	p.Thr25Asn	missense	Exon 2 of 4	NP_000612.1
	HTR2A	NM_001378924.1		c.74C>A	p.Thr25Asn	missense	Exon 2 of 4	NP_001365853.1
	HTR2A	NM_001165947.5		c.-78+841C>A		intron	N/A	NP_001159419.2

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HTR2A	ENST00000542664.4	TSL:1 MANE Select	c.74C>A	p.Thr25Asn	missense	Exon 2 of 4	ENSP00000437737.1
	HTR2A	ENST00000543956.5	TSL:1	c.-78+841C>A		intron	N/A	ENSP00000441861.2
	ENSG00000301465	ENST00000778995.1		n.111+3290G>T		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.0165 AC: 2506 AN: 152180 Hom.: 27 Cov.: 32

Gnomad AFR AF: 0.00352

Gnomad AMI AF: 0.0329

Gnomad AMR AF: 0.0126

Gnomad ASJ AF: 0.0271

Gnomad EAS AF: 0.000192

Gnomad SAS AF: 0.0263

Gnomad FIN AF: 0.0274

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0234

Gnomad OTH AF: 0.0134

GnomAD2 exomes AF: 0.0184 AC: 4621 AN: 251412 AF XY: 0.0197

Gnomad AFR exome AF: 0.00351

Gnomad AMR exome AF: 0.00917

Gnomad ASJ exome AF: 0.0278

Gnomad EAS exome AF: 0.000272

Gnomad FIN exome AF: 0.0245

Gnomad NFE exome AF: 0.0232

Gnomad OTH exome AF: 0.0199

GnomAD4 exome AF: 0.0222 AC: 32386 AN: 1461768 Hom.: 383 Cov.: 33 AF XY: 0.0223 AC XY: 16200 AN XY: 727192

African (AFR) AF: 0.00305 AC: 102 AN: 33476

American (AMR) AF: 0.00950 AC: 425 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.0266 AC: 694 AN: 26136

East Asian (EAS) AF: 0.000126 AC: 5 AN: 39700

South Asian (SAS) AF: 0.0221 AC: 1907 AN: 86252

European-Finnish (FIN) AF: 0.0236 AC: 1258 AN: 53374

Middle Eastern (MID) AF: 0.0151 AC: 87 AN: 5768

European-Non Finnish (NFE) AF: 0.0240 AC: 26673 AN: 1111944

Other (OTH) AF: 0.0204 AC: 1235 AN: 60394

GnomAD4 genome AF: 0.0164 AC: 2505 AN: 152298 Hom.: 27 Cov.: 32 AF XY: 0.0168 AC XY: 1248 AN XY: 74466

African (AFR) AF: 0.00351 AC: 146 AN: 41570

American (AMR) AF: 0.0126 AC: 192 AN: 15298

Ashkenazi Jewish (ASJ) AF: 0.0271 AC: 94 AN: 3470

East Asian (EAS) AF: 0.000193 AC: 1 AN: 5184

South Asian (SAS) AF: 0.0263 AC: 127 AN: 4824

European-Finnish (FIN) AF: 0.0274 AC: 291 AN: 10610

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.0234 AC: 1595 AN: 68022

Other (OTH) AF: 0.0132 AC: 28 AN: 2114

Alfa AF: 0.0214 Hom.: 143

Bravo AF: 0.0146

TwinsUK AF: 0.0227 AC: 84

ALSPAC AF: 0.0228 AC: 88

ESP6500AA AF: 0.00545 AC: 24

ESP6500EA AF: 0.0242 AC: 208

ExAC AF: 0.0185 AC: 2250

Asia WGS AF: 0.00866 AC: 30 AN: 3478

EpiCase AF: 0.0217

EpiControl AF: 0.0236

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.071
BayesDel_addAF	Benign	-0.60	T
BayesDel_noAF	Benign	-0.62
CADD	Benign	15
DANN	Benign	0.97
DEOGEN2	Benign	0.083	T
Eigen	Benign	-0.50
Eigen_PC	Benign	-0.32
FATHMM_MKL	Benign	0.74	D
LIST_S2	Benign	0.74	T
MetaRNN	Benign	0.0022	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.0	N
PhyloP100		1.8
PrimateAI	Benign	0.24	T
PROVEAN	Benign	0.020	N
REVEL	Benign	0.12
Sift	Benign	0.16	T
Sift4G	Benign	0.35	T
Polyphen		0.019	B
Vest4		0.057
MPC		0.36
ClinPred		0.028	T
GERP RS		3.4
PromoterAI		-0.010	Neutral
Varity_R		0.058
gMVP		0.55
Mutation Taster		=96/4	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: rs1805055; hg19: chr13-47469968; COSMIC: COSV66327897; COSMIC: COSV66327897;