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Pathway Human Homo sapiens

Platelet homeostasis

R-HSA-418346 in Reactome release 97: under Hemostasis, with 88 genes placed in it by the mapping files and 4 child pathways in the hierarchy.

The same number in the other species

Reactome writes the mouse and rat events it infers from a human pathway under the human number with the species token. A door opens only where that species' own list in this release holds the id: R-MMU-418346 (mouse), R-RNO-418346 (rat). Whether the event was inferred from this one is what the record says.

01The record

Reactome's own record of this pathway

What this tells you

The pathway list, the hierarchy and the genes on this page are read from the files Reactome publishes for Reactome release 97, built into this site on 2026-09-09: the pathway list, the hierarchy relationship file and the two gene mapping files. The record card is the one live read, Reactome's own record of this pathway.

Reactome's download page describes the mapping files: Mapping files link the source database identifier to the lowest level pathway diagram or subset of the pathway, all levels of the pathway hierarchy or database identifier to all reactions. [R13] The gene list here is the all-levels mapping of NCBI Gene ids, filled from the all-levels mapping of Ensembl ids where the NCBI file has no row for a gene; each row names which file it came from by the shape of its source id. Each row carries the evidence codes the file writes for it, as written and unranked, and both where the file writes both; no page of Reactome's documentation the survey read defines the codes, so this page does not expand them. A gene id the identity files do not name is kept as the source's own id with no door rather than turned into a symbol.

On citing what a search finds, Reactome says: It should be remembered that while we strive to contain the most current and accurate data, Reactome should not be used in citations where other primary sources of information are available. [R12] The record card prints the literature Reactome attaches to a curated pathway for that reason. The data are public domain: All data in the Reactome database and files derived from that data are licensed under the Creative Commons Public Domain Dedication (CC0). User may copy, modify, and distribute these data, even for commercial purposes, without asking for permission. Attribution is encouraged but not required. [R10] The pathway illustrations are licensed apart, under CC BY 4.0, and none is shown here.

A gene on this list is one Reactome places in this pathway in this release, and that is all the row says: it does not say the gene is expressed in a tissue or associated with a disease, which are the other two explorers' questions, read from other sources. Reactome's papers of record are [R01] [R02].

  1. [R01] Ragueneau E, Gong C, Sinquin P, Sevilla C, Beavers D, Grentner A, et al. (2026). The Reactome Knowledgebase 2026. Nucleic Acids Research 54:D673-D681. PMID 41251150, doi 10.1093/nar/gkaf1223.
  2. [R02] Milacic M, Beavers D, Conley P, Gong C, Gillespie M, Griss J, et al. (2024). The Reactome Pathway Knowledgebase 2024. Nucleic Acids Research 52:D672-D678. PMID 37941124, doi 10.1093/nar/gkad1025.
  3. [R10] Reactome, reactome.org. License Agreement. https://reactome.org/license, read 2026-09-09.
  4. [R12] Reactome, reactome.org. Citing us. https://reactome.org/cite, read 2026-09-09.
  5. [R13] Reactome, reactome.org. Download. https://reactome.org/download-data, read 2026-09-09.
Reading this pathway's record from Reactome (the pathway record).Still reading. A first read of a pathway can take a while; this page waits up to 35 seconds for it, and its scripts then bring in the panel, or a line saying what did not arrive.

02The genes

Genes Reactome places in this human pathway

The mapping files place 88 genes in this human pathway; showing 1 to 88, in pages of 100, sorted by symbol for reading. The order carries no ranking.

Genes Reactome places in this human pathway, page 1 of 1
GeneAPOBAuthorityHGNC:603Mapping file id338 NCBI fileEvidenceTAS
GeneATP2A1AuthorityHGNC:811Mapping file id487 NCBI fileEvidenceTAS
GeneATP2A2AuthorityHGNC:812Mapping file id488 NCBI fileEvidenceTAS
GeneATP2A3AuthorityHGNC:813Mapping file id489 NCBI fileEvidenceTAS
GeneATP2B1AuthorityHGNC:814Mapping file id490 NCBI fileEvidenceTAS
GeneATP2B2AuthorityHGNC:815Mapping file id491 NCBI fileEvidenceTAS
GeneATP2B3AuthorityHGNC:816Mapping file id492 NCBI fileEvidenceTAS
GeneATP2B4AuthorityHGNC:817Mapping file id493 NCBI fileEvidenceTAS
GeneCALM1AuthorityHGNC:1442Mapping file id801 NCBI fileEvidenceTAS
GeneCALM2AuthorityHGNC:1445Mapping file id805 NCBI fileEvidenceTAS
GeneCALM3AuthorityHGNC:1449Mapping file id808 NCBI fileEvidenceTAS
GeneFGRAuthorityHGNC:3697Mapping file id2268 NCBI fileEvidenceTAS
GeneGNASAuthorityHGNC:4392Mapping file id2778 NCBI fileEvidenceIEA, TAS
GeneGNB1AuthorityHGNC:4396Mapping file id2782 NCBI fileEvidenceIEA, TAS
GeneGNB2AuthorityHGNC:4398Mapping file id2783 NCBI fileEvidenceIEA, TAS
GeneGNB3AuthorityHGNC:4400Mapping file id2784 NCBI fileEvidenceIEA, TAS
GeneGNB4AuthorityHGNC:20731Mapping file id59345 NCBI fileEvidenceIEA, TAS
GeneGNB5AuthorityHGNC:4401Mapping file id10681 NCBI fileEvidenceIEA, TAS
GeneGNG10AuthorityHGNC:4402Mapping file id2790 NCBI fileEvidenceIEA, TAS
GeneGNG11AuthorityHGNC:4403Mapping file id2791 NCBI fileEvidenceIEA, TAS
GeneGNG12AuthorityHGNC:19663Mapping file id55970 NCBI fileEvidenceIEA, TAS
GeneGNG13AuthorityHGNC:14131Mapping file id51764 NCBI fileEvidenceIEA, TAS
GeneGNG2AuthorityHGNC:4404Mapping file id54331 NCBI fileEvidenceIEA, TAS
GeneGNG3AuthorityHGNC:4405Mapping file id2785 NCBI fileEvidenceIEA, TAS
GeneGNG4AuthorityHGNC:4407Mapping file id2786 NCBI fileEvidenceIEA, TAS
GeneGNG5AuthorityHGNC:4408Mapping file id2787 NCBI fileEvidenceIEA, TAS
GeneGNG7AuthorityHGNC:4410Mapping file id2788 NCBI fileEvidenceIEA, TAS
GeneGNG8AuthorityHGNC:19664Mapping file id94235 NCBI fileEvidenceIEA, TAS
GeneGNGT1AuthorityHGNC:4411Mapping file id2792 NCBI fileEvidenceIEA, TAS
GeneGNGT2AuthorityHGNC:4412Mapping file id2793 NCBI fileEvidenceIEA, TAS
GeneGUCY1A1AuthorityHGNC:4685Mapping file id2982 NCBI fileEvidenceIEA
GeneGUCY1A2AuthorityHGNC:4684Mapping file id2977 NCBI fileEvidenceIEA
GeneGUCY1B1AuthorityHGNC:4687Mapping file id2983 NCBI fileEvidenceIEA
GeneIRAG1AuthorityHGNC:7237Mapping file id10335 NCBI fileEvidenceTAS
GeneITPR1AuthorityHGNC:6180Mapping file id3708 NCBI fileEvidenceTAS
GeneITPR2AuthorityHGNC:6181Mapping file id3709 NCBI fileEvidenceTAS
GeneITPR3AuthorityHGNC:6182Mapping file id3710 NCBI fileEvidenceTAS
GeneKCNMA1AuthorityHGNC:6284Mapping file id3778 NCBI fileEvidenceIEA
GeneKCNMB1AuthorityHGNC:6285Mapping file id3779 NCBI fileEvidenceIEA
GeneKCNMB2AuthorityHGNC:6286Mapping file id10242 NCBI fileEvidenceIEA
GeneKCNMB3AuthorityHGNC:6287Mapping file id27094 NCBI fileEvidenceIEA
GeneKCNMB4AuthorityHGNC:6289Mapping file id27345 NCBI fileEvidenceIEA
GeneLRP8AuthorityHGNC:6700Mapping file id7804 NCBI fileEvidenceTAS
GeneMAPK14AuthorityHGNC:6876Mapping file id1432 NCBI fileEvidenceTAS
GeneNOS1AuthorityHGNC:7872Mapping file id4842 NCBI fileEvidenceTAS
GeneNOS2AuthorityHGNC:7873Mapping file id4843 NCBI fileEvidenceTAS
GeneNOS3AuthorityHGNC:7876Mapping file id4846 NCBI fileEvidenceTAS
GeneORAI1AuthorityHGNC:25896Mapping file id84876 NCBI fileEvidenceIEA
GeneORAI2AuthorityHGNC:21667Mapping file id80228 NCBI fileEvidenceIEA
GeneP2RX1AuthorityHGNC:8533Mapping file id5023 NCBI fileEvidenceTAS
GeneP2RX2AuthorityHGNC:15459Mapping file id22953 NCBI fileEvidenceTAS
GeneP2RX3AuthorityHGNC:8534Mapping file id5024 NCBI fileEvidenceTAS
GeneP2RX4AuthorityHGNC:8535Mapping file id5025 NCBI fileEvidenceTAS
GeneP2RX5AuthorityHGNC:8536Mapping file id5026 NCBI fileEvidenceTAS
GeneP2RX6AuthorityHGNC:8538Mapping file id9127 NCBI fileEvidenceTAS
GeneP2RX7AuthorityHGNC:8537Mapping file id5027 NCBI fileEvidenceTAS
GenePAFAH2AuthorityHGNC:8579Mapping file id5051 NCBI fileEvidenceTAS
GenePDE10AAuthorityHGNC:8772Mapping file id10846 NCBI fileEvidenceTAS
GenePDE11AAuthorityHGNC:8773Mapping file id50940 NCBI fileEvidenceTAS
GenePDE1AAuthorityHGNC:8774Mapping file id5136 NCBI fileEvidenceTAS
GenePDE1BAuthorityHGNC:8775Mapping file id5153 NCBI fileEvidenceTAS
GenePDE2AAuthorityHGNC:8777Mapping file id5138 NCBI fileEvidenceTAS
GenePDE5AAuthorityHGNC:8784Mapping file id8654 NCBI fileEvidenceTAS
GenePDE9AAuthorityHGNC:8795Mapping file id5152 NCBI fileEvidenceTAS
GenePECAM1AuthorityHGNC:8823Mapping file id5175 NCBI fileEvidenceTAS
GenePLA2G4AAuthorityHGNC:9035Mapping file id5321 NCBI fileEvidenceTAS
GenePPP2CAAuthorityHGNC:9299Mapping file id5515 NCBI fileEvidenceTAS
GenePPP2CBAuthorityHGNC:9300Mapping file id5516 NCBI fileEvidenceTAS
GenePPP2R1AAuthorityHGNC:9302Mapping file id5518 NCBI fileEvidenceTAS
GenePPP2R1BAuthorityHGNC:9303Mapping file id5519 NCBI fileEvidenceTAS
GenePPP2R5AAuthorityHGNC:9309Mapping file id5525 NCBI fileEvidenceTAS
GenePPP2R5BAuthorityHGNC:9310Mapping file id5526 NCBI fileEvidenceTAS
GenePPP2R5CAuthorityHGNC:9311Mapping file id5527 NCBI fileEvidenceTAS
GenePPP2R5DAuthorityHGNC:9312Mapping file id5528 NCBI fileEvidenceTAS
GenePPP2R5EAuthorityHGNC:9313Mapping file id5529 NCBI fileEvidenceTAS
GenePRKG1AuthorityHGNC:9414Mapping file id5592 NCBI fileEvidenceIEA, TAS
GenePRKG2AuthorityHGNC:9416Mapping file id5593 NCBI fileEvidenceIEA, TAS
GenePTGIRAuthorityHGNC:9602Mapping file id5739 NCBI fileEvidenceIEA, TAS
GenePTPN11AuthorityHGNC:9644Mapping file id5781 NCBI fileEvidenceTAS
GenePTPN6AuthorityHGNC:9658Mapping file id5777 NCBI fileEvidenceTAS
GeneSLC8A1AuthorityHGNC:11068Mapping file id6546 NCBI fileEvidenceTAS
GeneSLC8A2AuthorityHGNC:11069Mapping file id6543 NCBI fileEvidenceTAS
GeneSLC8A3AuthorityHGNC:11070Mapping file id6547 NCBI fileEvidenceTAS
GeneSRIAuthorityHGNC:11292Mapping file id6717 NCBI fileEvidenceTAS
GeneSTIM1AuthorityHGNC:11386Mapping file id6786 NCBI fileEvidenceIEA
GeneTRPC3AuthorityHGNC:12335Mapping file id7222 NCBI fileEvidenceTAS
GeneTRPC6AuthorityHGNC:12338Mapping file id7225 NCBI fileEvidenceTAS
GeneTRPC7AuthorityHGNC:20754Mapping file id57113 NCBI fileEvidenceTAS

Evidence codes on this page: IEA, TAS, as the mapping file writes them; a row carrying two was written twice by the file, once under each. The mapping file id says which file placed the gene: an NCBI Gene id from NCBI2Reactome_All_Levels.txt, an Ensembl gene id from Ensembl2Reactome_All_Levels.txt. The two files can disagree about a code, so a row's codes are the one file's view. Measured by this site's build over this release on 2026-09-09: of the 138,908 human pathway-gene pairs both files place, 207 (0.149 per cent, over 47 genes) carry TAS in the Ensembl file where the NCBI rows carry IEA alone.

  • Reactome mapping files, the human rows for this pathway · Reactome release 97 · read · Reactome downloads"NCBI2Reactome_All_Levels.txt" and "Ensembl2Reactome_All_Levels.txt", Reactome, release 97, https://reactome.org/download-data/ (date of access 2026-09-09). Data CC0; attribution encouraged.

03The hierarchy

Parents and children in this release's hierarchy

Reactome's hierarchy is a graph rather than a tree: a pathway can sit under more than one parent, and the gene counts are each pathway's own placements at every level under it, so a parent's count is not the sum of its children's.

  • Reactome, the human pathway list and hierarchy relationship file · Reactome release 97 · read · Reactome downloads"ReactomePathways.txt" and "ReactomePathwaysRelation.txt", Reactome, release 97, https://reactome.org/download-data/ (date of access 2026-09-09). Data CC0; attribution encouraged.