Explore by pathway Human Homo sapiens
Pathways in human
2,883 pathways in the human list of Reactome release 97, 29 of them top-level, with 145,902 gene placements from Reactome's mapping files. Search a name, or start from a top-level pathway.
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Top-level pathways
The 29 pathways of the human list with no parent
Reactome's hierarchy file gives every other pathway at least one parent; these are the roots it descends from. The gene count is the number of genes the mapping files place in the pathway at every level under it.
- AutophagyR-HSA-9612973160 genes
- Cell CycleR-HSA-1640170691 genes
- Cell-Cell communicationR-HSA-1500931364 genes
- Cellular responses to stimuliR-HSA-8953897927 genes
- Chromatin organizationR-HSA-4839726380 genes
- Circadian clockR-HSA-9909396112 genes
- Developmental BiologyR-HSA-12667381,589 genes
- Digestion and absorptionR-HSA-896374328 genes
- DiseaseR-HSA-16436852,550 genes
- DNA RepairR-HSA-73894368 genes
- DNA ReplicationR-HSA-69306186 genes
- Drug ADMER-HSA-9748784109 genes
- Extracellular matrix organizationR-HSA-1474244321 genes
- Gene expression (Transcription)R-HSA-741601,545 genes
- HemostasisR-HSA-109582692 genes
- Immune SystemR-HSA-1682562,484 genes
- MetabolismR-HSA-14307282,196 genes
- Metabolism of proteinsR-HSA-3924992,148 genes
- Metabolism of RNAR-HSA-8953854751 genes
- Muscle contractionR-HSA-397014205 genes
- Neuronal SystemR-HSA-112316416 genes
- Organelle biogenesis and maintenanceR-HSA-1852241330 genes
- Programmed Cell DeathR-HSA-5357801204 genes
- Protein localizationR-HSA-9609507164 genes
- ReproductionR-HSA-1474165158 genes
- Sensory PerceptionR-HSA-9709957641 genes
- Signal TransductionR-HSA-1625822,631 genes
- Transport of small moleculesR-HSA-382551722 genes
- Vesicle-mediated transportR-HSA-5653656735 genes
- Reactome, the human pathway list and hierarchy · Reactome release 97 · read · Reactome downloads"ReactomePathways.txt" and "ReactomePathwaysRelation.txt", Reactome, release 97, https://reactome.org/download-data/ (date of access 2026-10-10 ET). Data CC0; attribution encouraged.