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Pathway Human Homo sapiens

Disease

R-HSA-1643685 in Reactome release 97: a top-level pathway, with 2,550 genes placed in it by the mapping files and 12 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; neither of the other two lists holds it. 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 2,550 genes in this human pathway; showing 201 to 300, in pages of 100, sorted by symbol for reading. The order carries no ranking.

Genes Reactome places in this human pathway, page 3 of 26
GeneBCKDHBAuthorityHGNC:987Mapping file id594 NCBI fileEvidenceTAS
GeneBCKDKAuthorityHGNC:16902Mapping file id10295 NCBI fileEvidenceTAS
GeneBCL11AAuthorityHGNC:13221Mapping file id53335 NCBI fileEvidenceTAS
GeneBCL2A1AuthorityHGNC:991Mapping file id597 NCBI fileEvidenceTAS
GeneBCL2L1AuthorityHGNC:992Mapping file id598 NCBI fileEvidenceTAS
GeneBCL2L11AuthorityHGNC:994Mapping file id10018 NCBI fileEvidenceTAS
GeneBCRAuthorityHGNC:1014Mapping file id613 NCBI fileEvidenceTAS
GeneBDNFAuthorityHGNC:1033Mapping file id627 NCBI fileEvidenceTAS
GeneBECN1AuthorityHGNC:1034Mapping file id8678 NCBI fileEvidenceIEA, TAS
GeneBGNAuthorityHGNC:1044Mapping file id633 NCBI fileEvidenceTAS
GeneBIN2AuthorityHGNC:1053Mapping file id51411 NCBI fileEvidenceTAS
GeneBIRC6AuthorityHGNC:13516Mapping file id57448 NCBI fileEvidenceTAS
GeneBLMAuthorityHGNC:1058Mapping file id641 NCBI fileEvidenceTAS
GeneBLNKAuthorityHGNC:14211Mapping file id29760 NCBI fileEvidenceTAS
GeneBRAFAuthorityHGNC:1097Mapping file id673 NCBI fileEvidenceTAS
GeneBRAPAuthorityHGNC:1099Mapping file id8315 NCBI fileEvidenceTAS
GeneBRCA1AuthorityHGNC:1100Mapping file id672 NCBI fileEvidenceTAS
GeneBRCA2AuthorityHGNC:1101Mapping file id675 NCBI fileEvidenceTAS
GeneBRD4AuthorityHGNC:13575Mapping file id23476 NCBI fileEvidenceTAS
GeneBRIP1AuthorityHGNC:20473Mapping file id83990 NCBI fileEvidenceTAS
GeneBRK1AuthorityHGNC:23057Mapping file id55845 NCBI fileEvidenceIEA, TAS
GeneBRMS1AuthorityHGNC:17262Mapping file id25855 NCBI fileEvidenceTAS
GeneBSGAuthorityHGNC:1116Mapping file id682 NCBI fileEvidenceTAS
GeneBST2AuthorityHGNC:1119Mapping file id684 NCBI fileEvidenceTAS
GeneBTCAuthorityHGNC:1121Mapping file id685 NCBI fileEvidenceTAS
GeneBTDAuthorityHGNC:1122Mapping file id686 NCBI fileEvidenceTAS
GeneBTF3AuthorityHGNC:1125Mapping file id689 NCBI fileEvidenceTAS
GeneBTKAuthorityHGNC:1133Mapping file id695 NCBI fileEvidenceTAS
GeneBTRCAuthorityHGNC:1144Mapping file id8945 NCBI fileEvidenceTAS
GeneBUD31AuthorityHGNC:29629Mapping file id8896 NCBI fileEvidenceTAS
GeneC1GALT1AuthorityHGNC:24337Mapping file id56913 NCBI fileEvidenceTAS
GeneC1GALT1C1AuthorityHGNC:24338Mapping file id29071 NCBI fileEvidenceTAS
GeneC1QAAuthorityHGNC:1241Mapping file id712 NCBI fileEvidenceTAS
GeneC1QBPAuthorityHGNC:1243Mapping file id708 NCBI fileEvidenceTAS
GeneC1SAuthorityHGNC:1247Mapping file id716 NCBI fileEvidenceTAS
GeneC3AuthorityHGNC:1318Mapping file id718 NCBI fileEvidenceTAS
GeneC3AR1AuthorityHGNC:1319Mapping file id719 NCBI fileEvidenceTAS
GeneC4AAuthorityHGNC:1323Mapping file id720 NCBI fileEvidenceTAS
GeneC4A_2AuthorityHGNC:58753Mapping file idENSG00000227746 Ensembl fileEvidenceTAS
GeneC4BAuthorityHGNC:1324Mapping file id721 NCBI fileEvidenceTAS
GeneC4B_2AuthorityHGNC:42398Mapping file id100293534 NCBI fileEvidenceTAS
GeneC4BPAAuthorityHGNC:1325Mapping file id722 NCBI fileEvidenceTAS
GeneC4BPBAuthorityHGNC:1328Mapping file id725 NCBI fileEvidenceTAS
GeneCALM1AuthorityHGNC:1442Mapping file id801 NCBI fileEvidenceIEA, TAS
GeneCALM2AuthorityHGNC:1445Mapping file id805 NCBI fileEvidenceIEA, TAS
GeneCALM3AuthorityHGNC:1449Mapping file id808 NCBI fileEvidenceIEA, TAS
GeneCALRAuthorityHGNC:1455Mapping file id811 NCBI fileEvidenceTAS
GeneCAMK2AAuthorityHGNC:1460Mapping file id815 NCBI fileEvidenceTAS
GeneCAMK2BAuthorityHGNC:1461Mapping file id816 NCBI fileEvidenceTAS
GeneCAMK2DAuthorityHGNC:1462Mapping file id817 NCBI fileEvidenceTAS
GeneCAMK2GAuthorityHGNC:1463Mapping file id818 NCBI fileEvidenceTAS
GeneCAMK4AuthorityHGNC:1464Mapping file id814 NCBI fileEvidenceIEA
GeneCANXAuthorityHGNC:1473Mapping file id821 NCBI fileEvidenceIEA, TAS
GeneCAPN1AuthorityHGNC:1476Mapping file id823 NCBI fileEvidenceIEA, TAS
GeneCAPN2AuthorityHGNC:1479Mapping file id824 NCBI fileEvidenceIEA, TAS
GeneCAPNS1AuthorityHGNC:1481Mapping file id826 NCBI fileEvidenceIEA, TAS
GeneCAPNS2AuthorityHGNC:16371Mapping file id84290 NCBI fileEvidenceIEA, TAS
GeneCARS1AuthorityHGNC:1493Mapping file id833 NCBI fileEvidenceTAS
GeneCASP1AuthorityHGNC:1499Mapping file id834 NCBI fileEvidenceTAS
GeneCASP4AuthorityHGNC:1505Mapping file id837 NCBI fileEvidenceTAS
GeneCASP8AuthorityHGNC:1509Mapping file id841 NCBI fileEvidenceTAS
GeneCASP9AuthorityHGNC:1511Mapping file id842 NCBI fileEvidenceTAS
GeneCASTAuthorityHGNC:1515Mapping file id831 NCBI fileEvidenceIEA, TAS
GeneCAV1AuthorityHGNC:1527Mapping file id857 NCBI fileEvidenceIEA, TAS
GeneCBLAuthorityHGNC:1541Mapping file id867 NCBI fileEvidenceIEA, TAS
GeneCBLIFAuthorityHGNC:4268Mapping file id2694 NCBI fileEvidenceTAS
GeneCBLL1AuthorityHGNC:21225Mapping file id79872 NCBI fileEvidenceTAS
GeneCBX1AuthorityHGNC:1551Mapping file id10951 NCBI fileEvidenceTAS
GeneCCAR1AuthorityHGNC:24236Mapping file id55749 NCBI fileEvidenceTAS
GeneCCNB1AuthorityHGNC:1579Mapping file id891 NCBI fileEvidenceTAS
GeneCCNCAuthorityHGNC:1581Mapping file id892 NCBI fileEvidenceTAS
GeneCCND1AuthorityHGNC:1582Mapping file id595 NCBI fileEvidenceTAS
GeneCCND2AuthorityHGNC:1583Mapping file id894 NCBI fileEvidenceTAS
GeneCCND3AuthorityHGNC:1585Mapping file id896 NCBI fileEvidenceTAS
GeneCCNE1AuthorityHGNC:1589Mapping file id898 NCBI fileEvidenceTAS
GeneCCNE2AuthorityHGNC:1590Mapping file id9134 NCBI fileEvidenceTAS
GeneCCNHAuthorityHGNC:1594Mapping file id902 NCBI fileEvidenceIEA
GeneCCNKAuthorityHGNC:1596Mapping file id8812 NCBI fileEvidenceIEA
GeneCCNT1AuthorityHGNC:1599Mapping file id904 NCBI fileEvidenceIEA, TAS
GeneCCNT2AuthorityHGNC:1600Mapping file id905 NCBI fileEvidenceIEA
GeneCCR5AuthorityHGNC:1606Mapping file id1234 NCBI fileEvidenceTAS
GeneCD14AuthorityHGNC:1628Mapping file id929 NCBI fileEvidenceTAS
GeneCD163AuthorityHGNC:1631Mapping file id9332 NCBI fileEvidenceTAS
GeneCD19AuthorityHGNC:1633Mapping file id930 NCBI fileEvidenceTAS
GeneCD209AuthorityHGNC:1641Mapping file id30835 NCBI fileEvidenceTAS
GeneCD247AuthorityHGNC:1677Mapping file id919 NCBI fileEvidenceTAS
GeneCD28AuthorityHGNC:1653Mapping file id940 NCBI fileEvidenceTAS
GeneCD2BP2AuthorityHGNC:1656Mapping file id10421 NCBI fileEvidenceTAS
GeneCD300AAuthorityHGNC:19319Mapping file id11314 NCBI fileEvidenceTAS
GeneCD320AuthorityHGNC:16692Mapping file id51293 NCBI fileEvidenceTAS
GeneCD33AuthorityHGNC:1659Mapping file id945 NCBI fileEvidenceTAS
GeneCD36AuthorityHGNC:1663Mapping file id948 NCBI fileEvidenceTAS
GeneCD3GAuthorityHGNC:1675Mapping file id917 NCBI fileEvidenceTAS
GeneCD4AuthorityHGNC:1678Mapping file id920 NCBI fileEvidenceTAS
GeneCD79AAuthorityHGNC:1698Mapping file id973 NCBI fileEvidenceTAS
GeneCD79BAuthorityHGNC:1699Mapping file id974 NCBI fileEvidenceTAS
GeneCD80AuthorityHGNC:1700Mapping file id941 NCBI fileEvidenceTAS
GeneCD86AuthorityHGNC:1705Mapping file id942 NCBI fileEvidenceTAS
GeneCD8BAuthorityHGNC:1707Mapping file id926 NCBI fileEvidenceTAS
GeneCD9AuthorityHGNC:1709Mapping file id928 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.