HTR2A

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

Biological Domains

Apoptosis, Immune Response, Lipid Metabolism, Mitochondrial Metabolism, Structural Stabilization, Synapse, Vasculature

Pharos Class

Tclin

Also known as

ENSG00000102468 (Ensembl Release 115)

UNIPROTKB P28223

5-HT2A, HTR2

Summary of Evidence

This tab shows an overview of how the selected gene is associated with AD.

  • Genetic Association with LOAD

    Indicates whether or not this gene shows significant genetic association with Late Onset AD (LOAD) based on evidence from multiple studies compiled by the ADSP Gene Verification Committee
    False

  • Brain eQTL

    Indicates whether or not this gene locus has a significant expression Quantitative Trait Locus (eQTL) based on an AMP-AD consortium study
    True

  • RNA Expression Change in AD Brain

    Indicates whether or not this gene shows significant differential expression in at least one brain region based on AMP-AD consortium work. See ‘EVIDENCE’ tab.
    True

  • Protein Expression Change in AD Brain

    Indicates whether or not this gene shows significant differential protein expression in at least one brain region based on AMP-AD consortium work. See ‘EVIDENCE’ tab.
    False

  • Nominated Target

    Indicates whether or not this gene has been submitted as a nominated target to Agora.
    False

AD Risk Scores

About AD Risk Scores

The TREAT-AD Center at Emory-Sage-SGC has developed a Target Risk Score (TRS) to objectively rank the potential involvement of specific genes in AD. The TRS is derived by summing two component risk scores, the Genetic Risk Score and the Multi-omic Risk Score, each of which is derived from a meta-analysis of multiple harmonized data sets. More information about the methodology used to define these risk scores is available here.

AD Risk Scores for HTR2A

The TRS for HTR2A, along with the component Genetic and Multi-omic Risk Scores, is shown here. The scores for HTR2A are superimposed on the genome-wide score distributions. If No Data is Currently Available is displayed for a score, that score was not calculated for HTR2A.

Biological Domain Classification

About Biological Domains

A biological domain represents a standardized area of biology defined by a set of discrete, biologically coherent GO terms. The TREAT-AD Center at Emory-Sage-SGC has defined nineteen biological domains associated with AD, and objectively mapped genes to those biological domains using GO term annotations. More information about the methodology used to define AD biological domains, and to generate genome-wide biological domain mappings, is available here.

Biological Domains for HTR2A

Select a biological domain on the left to see the list of GO terms that link HTR2A to it on the right. The percentage value displayed next to the currently selected biological domain indicates the proportion of HTR2A's total unique GO terms that map to the biological domain. The ratio displayed on the right indicates how many of the biological domain's total GO terms HTR2A is annotated with.