Table 1: Stress-related genes studied for DNA or mRNA effects in FMS, CFS, or related disorders.

Adrenergic receptorsα-1, α-2A, α-2C, β-1, β-2, β-3
CytokinesIL6, IL10, LTa, CD14, TLR4
Dopamine receptors, enzyme, and transporterDRD1, DRD2, DRD3, DRD4, DBH, SLC6A3
Glucocorticoid and mineralocorticoid receptorsNR3C1, NR3C2
Ion channels PurinergicP2X4, P2X5, P2X7
Acid sensingASIC1a, ASIC3
Transient vanilloid receptorTRPV1
Opioid receptors (kappa and delta)OPRK1, OPRD1
Serotonin receptors, synthesis gene and transporterHTR2a, HTR3a, HTR3b, TPH2, SLC6A4