| AUTS2 | Activator of Transcription and Developmental Regulator |
| BD | Bipolar disorder |
| cAMP | Cyclic AMP |
| CAPNS1 | Calpain Small Subunit 1 |
| BH | Benjamini–Hochberg |
| BHLHE40 | Basic Helix-Loop-Helix Family Member E40 |
| cDNA | Complementary DNA |
| ConLiGen | Consortium on Lithium Genetics |
| DE | Differentially expressed |
| CPM | Counts per million |
| dUTP | 2’-Deoxyuridine 5’-Triphosphate |
| ER | Excellent responders |
| FC | Fold change |
| FDR | False discovery rate |
| GAPDH | Glyceraldehyde-3-Phosphate Dehydrogenase |
| GWAS | Genome-wide association study |
| KYAT1 | Kynurenine Aminotransferase 1 |
| LCL | Lymphoblastoid cell lines |
| LiCl | Lithium chloride |
| MDD | Major depressive disorder |
| mRNA | Messenger RNA |
| miRNA | microRNA |
| NGS | Next generation sequencing |
| NR | Non-responders |
| NTC | No-template controls |
| qRT-PCR | Quantitative reverse transcription-PCR |
| RDC | Research Diagnostic Criteria |
| RHOA | Ras Homolog Family Member A |
| RNU6B | RNA, U6 Small Nuclear 6, Pseudogene |
| RGS16 | Regulator of G Protein Signaling 16 |
| SCZ | Schizophrenia |
| SNP | Single nucleotide polymorphisms |
| SP4 | Sp4 Transcription Factor |
| SADS-L | Schedule for Affective Disorder and Schizophrenia Lifetime Version |
| SD | Standard deviation |
| SP4 | Sp4 Transcription Factor |
| TS | Total score |