PXYLP1

gene
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Also known as FLJ23751

Summary

PXYLP1 (2-phosphoxylose phosphatase 1, HGNC:26303) is a protein-coding gene on chromosome 3q23, encoding 2-phosphoxylose phosphatase 1 (Q8TE99). Responsible for the 2-O-dephosphorylation of xylose in the glycosaminoglycan-protein linkage region of proteoglycans thereby regulating the amount of mature glycosaminoglycan (GAG) chains.

Enables phosphatase activity. Involved in chondroitin sulfate proteoglycan biosynthetic process and positive regulation of heparan sulfate proteoglycan biosynthetic process. Located in Golgi apparatus.

Source: NCBI Gene 92370 — RefSeq curated summary.

At a glance

  • GWAS associations: 12
  • Clinical variants (ClinVar): 77 total
  • MANE Select transcript: NM_001037172

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:26303
Approved symbolPXYLP1
Name2-phosphoxylose phosphatase 1
Location3q23
Locus typegene with protein product
StatusApproved
AliasesFLJ23751
Ensembl geneENSG00000155893
Ensembl biotypeprotein_coding
OMIM619732
Entrez92370

Gene structure

Transcript identifiers

Ensembl transcripts: 31 — 22 protein_coding, 5 nonsense_mediated_decay, 2 protein_coding_CDS_not_defined, 2 retained_intron

ENST00000286353, ENST00000393010, ENST00000502783, ENST00000504264, ENST00000505013, ENST00000505502, ENST00000508812, ENST00000511968, ENST00000512457, ENST00000513007, ENST00000513528, ENST00000514263, ENST00000514680, ENST00000514880, ENST00000636601, ENST00000637579, ENST00000637751, ENST00000879101, ENST00000879102, ENST00000879103, ENST00000879104, ENST00000925230, ENST00000925231, ENST00000925232, ENST00000971913, ENST00000971914, ENST00000971915, ENST00000971916, ENST00000971917, ENST00000971918, ENST00000971919

RefSeq mRNA: 3 — MANE Select: NM_001037172 NM_001037172, NM_001282728, NM_152282

CCDS: CCDS3116, CCDS63797

Canonical transcript exons

ENST00000286353 — 6 exons

ExonStartEnd
ENSE00001023284141279378141279504
ENSE00002025423141292268141294924
ENSE00002048205141231825141231911
ENSE00003468577141287314141287453
ENSE00003480344141260123141260254
ENSE00003648560141278342141278500

Expression profiles

Bgee: expression breadth ubiquitous, 251 present calls, max score 99.36.

FANTOM5 (CAGE): breadth ubiquitous, TPM avg 8.0475 / max 104.4298, expressed in 1586 samples.

FANTOM5 promoters (9 alternative TSS)

Promoter IDTPM avgSamples expressed
388747.57541570
388720.168976
388710.094437
388800.075029
388730.067624
388760.02013
388790.01784
388750.01624
388700.01222

Top tissues by expression

261 total, by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
corpus epididymisUBERON:000435999.36gold quality
secondary oocyteCL:000065598.67gold quality
tibiaUBERON:000097998.55gold quality
thymusUBERON:000237098.34gold quality
oocyteCL:000002397.69gold quality
cauda epididymisUBERON:000436097.32gold quality
seminal vesicleUBERON:000099896.98gold quality
cartilage tissueUBERON:000241894.30gold quality
caput epididymisUBERON:000435893.99gold quality
tendon of biceps brachiiUBERON:000818893.74gold quality
cortical plateUBERON:000534393.55gold quality
left testisUBERON:000453393.44gold quality
Brodmann (1909) area 23UBERON:001355493.38gold quality
endothelial cellCL:000011593.30gold quality
right testisUBERON:000453493.09gold quality
ileal mucosaUBERON:000033192.57gold quality
testisUBERON:000047391.84gold quality
calcaneal tendonUBERON:000370191.47gold quality
middle temporal gyrusUBERON:000277190.59gold quality
tendonUBERON:000004390.50gold quality
epithelial cell of pancreasCL:000008389.73gold quality
ventricular zoneUBERON:000305389.41gold quality
layer of synovial tissueUBERON:000761689.32gold quality
embryoUBERON:000092289.14gold quality
ganglionic eminenceUBERON:000402389.14gold quality
primary visual cortexUBERON:000243688.86gold quality
germinal epithelium of ovaryUBERON:000130488.78gold quality
deciduaUBERON:000245088.55gold quality
pigmented layer of retinaUBERON:000178288.20gold quality
retinaUBERON:000096688.18gold quality

Single-cell (SCXA)

Detected in 1 experiment(s), a significant marker in 1.

ExperimentMarker?Max mean expression
E-ANND-3yes5.37

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

111 targeting PXYLP1, top 30 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific):

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-29A-3P100.0073.111835
HSA-MIR-29B-3P100.0073.181833
HSA-MIR-29C-3P100.0073.151833
HSA-MIR-4747-5P100.0067.902681
HSA-MIR-5196-5P100.0067.982761
HSA-MIR-4481100.0066.421669
HSA-MIR-3163100.0077.238605
HSA-MIR-340-5P100.0072.504437
HSA-MIR-188-3P100.0068.761240
HSA-MIR-428299.9975.366408
HSA-MIR-548C-3P99.9974.017587
HSA-MIR-4745-5P99.9865.951028
HSA-MIR-551B-5P99.9671.283493
HSA-MIR-545-3P99.9570.742783
HSA-MIR-767-5P99.9570.85993
HSA-MIR-454-3P99.9174.011925
HSA-MIR-106A-5P99.9073.942683
HSA-MIR-301A-3P99.9073.151839
HSA-MIR-130A-3P99.9073.311861
HSA-MIR-130B-3P99.9073.271850
HSA-MIR-301B-3P99.9073.191836
HSA-MIR-366699.9073.241833
HSA-MIR-429599.9073.111838
HSA-MIR-568299.8972.561005
HSA-MIR-17-5P99.8973.832665
HSA-MIR-106B-5P99.8874.722795
HSA-MIR-20A-5P99.8874.762769
HSA-MIR-20B-5P99.8874.012621
HSA-MIR-93-5P99.8873.982606
HSA-MIR-5582-3P99.8672.484221

Literature-anchored findings (GeneRIF, showing 1)

  • this study describes the cloning of a human cDNA encoding a novel protein designated 2-phosphoxylose phosphatase capable of dephosphorylating this Xyl residue. (PMID:24425863)

Cross-species orthologs

5 orthologs

OrganismSymbolGene ID
danio_reriopxylp1ENSDARG00000040644
mus_musculusPxylp1ENSMUSG00000043587
rattus_norvegicusPxylp1ENSRNOG00000012480
drosophila_melanogasterCG15385FBGN0031397
caenorhabditis_elegansWBGENE00014076

Paralogs (5): ACP3 (ENSG00000014257), ACP2 (ENSG00000134575), ACP4 (ENSG00000142513), FRA10AC1 (ENSG00000148690), ACP6 (ENSG00000162836)

Protein

Protein identifiers

2-phosphoxylose phosphatase 1Q8TE99 (reviewed: Q8TE99)

Alternative names: Acid phosphatase-like protein 2, Xylosyl phosphatase, epididymis luminal protein 124

All UniProt accessions (10): Q8TE99, A0A1B0GUH7, A0A1B0GWB5, B7Z3R9, B7Z4T2, D6R928, D6RDP0, D6RE60, D6RGE3, E9PDB7

UniProt curated annotations — full annotation on UniProt →

Function. Responsible for the 2-O-dephosphorylation of xylose in the glycosaminoglycan-protein linkage region of proteoglycans thereby regulating the amount of mature glycosaminoglycan (GAG) chains. Sulfated glycosaminoglycans (GAGs), including heparan sulfate and chondroitin sulfate, are synthesized on the so-called common GAG-protein linkage region (GlcUAbeta1-3Galbeta1-3Galbeta1-4Xylbeta1-O-Ser) of core proteins, which is formed by the stepwise addition of monosaccharide residues by the respective specific glycosyltransferases. Xylose 2-O-dephosphorylation during completion of linkage region formation is a prerequisite for the initiation and efficient elongation of the repeating disaccharide region of GAG chains.

Subunit / interactions. Interacts with B3GAT3; the interaction increases the 2-phosphoxylose phosphatase activity of PXYLP1 during completion of linkage region formation in a B3GAT3-mediated manner.

Subcellular location. Golgi apparatus membrane.

Tissue specificity. Widely expressed. Strongly expressed in spleen, fetal liver, moderately in placenta, pancreas, kidney, thymus and colon.

Similarity. Belongs to the histidine acid phosphatase family.

Isoforms (2)

UniProt IDNamesCanonical?
Q8TE99-11yes
Q8TE99-22

RefSeq proteins (3): NP_001032249, NP_001269657, NP_689495 (=MANE)

Domains & families (InterPro)

IDNameType
IPR000560His_Pase_clade-2Family
IPR029033His_PPase_superfamHomologous_superfamily
IPR050645Histidine_acid_phosphataseFamily

Pfam: PF00328

Catalyzed reactions (Rhea), 1 shown:

  • 3-O-[beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-2-O-P-Xyl]-L-seryl-[protein] + H2O = 3-O-(beta-D-GlcA-(1->3)-beta-D-Gal-(1->3)-beta-D-Gal-(1->4)-beta-D-Xyl)-L-seryl-[protein] + phosphate (RHEA:56512)

UniProt features (9 total): topological domain 2, active site 2, glycosylation site 2, chain 1, transmembrane region 1, splice variant 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q8TE99-F189.610.80

Functional residue map

Curated UniProt residues grouped by drug-discovery relevance — catalytic, ligand-binding, modification, and mutation-validated positions. Source: UniProtKB sequence features.

Catalytic / active sites (2): 97 (nucleophile); 379 (proton donor)

Glycosylation sites (2): 305, 354

Function

Pathways and Gene Ontology

Reactome pathways

1 pathways

IDPathway
R-HSA-1971475Glycosaminoglycan-protein linkage region biosynthesis

MSigDB gene sets: 198 (showing top): GSE45365_CD8A_DC_VS_CD11B_DC_IFNAR_KO_UP, GSE37336_LY6C_POS_VS_NEG_NAIVE_CD4_TCELL_UP, TAL1ALPHAE47_01, LHX3_01, BOYLAN_MULTIPLE_MYELOMA_D_DN, GOBP_CARBOHYDRATE_DERIVATIVE_METABOLIC_PROCESS, GOBP_AMINOGLYCAN_BIOSYNTHETIC_PROCESS, GOBP_CHONDROITIN_SULFATE_PROTEOGLYCAN_BIOSYNTHETIC_PROCESS, GOBP_REGULATION_OF_GLYCOPROTEIN_METABOLIC_PROCESS, GOBP_HEPARAN_SULFATE_PROTEOGLYCAN_METABOLIC_PROCESS, GOBP_CARBOHYDRATE_DERIVATIVE_BIOSYNTHETIC_PROCESS, BILD_E2F3_ONCOGENIC_SIGNATURE, GOBP_AMINOGLYCAN_METABOLIC_PROCESS, PYEON_CANCER_HEAD_AND_NECK_VS_CERVICAL_UP, GOBP_POSITIVE_REGULATION_OF_GLYCOPROTEIN_METABOLIC_PROCESS

GO Biological Process (4): glycosaminoglycan biosynthetic process (GO:0006024), positive regulation of heparan sulfate proteoglycan biosynthetic process (GO:0010909), chondroitin sulfate proteoglycan biosynthetic process (GO:0050650), positive regulation of proteoglycan biosynthetic process (GO:1902730)

GO Molecular Function (3): phosphatase activity (GO:0016791), protein binding (GO:0005515), hydrolase activity (GO:0016787)

GO Cellular Component (3): Golgi membrane (GO:0000139), Golgi apparatus (GO:0005794), membrane (GO:0016020)

Reactome top-level categories

Rollup of top-1 pathways:

CategoryPathways
Glycosaminoglycan metabolism1

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
proteoglycan biosynthetic process2
aminoglycan biosynthetic process1
glycosaminoglycan metabolic process1
regulation of heparan sulfate proteoglycan biosynthetic process1
heparan sulfate proteoglycan biosynthetic process1
positive regulation of proteoglycan biosynthetic process1
positive regulation of protein O-linked glycosylation1
chondroitin sulfate proteoglycan metabolic process1
protein O-linked glycosylation via xylose1
positive regulation of glycoprotein biosynthetic process1
phosphoric ester hydrolase activity1
binding1
catalytic activity1
Golgi apparatus1
bounding membrane of organelle1
cytoplasm1
endomembrane system1
intracellular membrane-bounded organelle1
cellular anatomical structure1

Protein interactions and networks

STRING

740 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
PXYLP1GALPQ9UBC7936
PXYLP1ARAFP07557932
PXYLP1B3GAT3O94766743
PXYLP1FAM20BO75063669
PXYLP1ALG11Q2TAA5584
PXYLP1EXTL2Q9UBQ6578
PXYLP1B3GALT6Q96L58516
PXYLP1B4GALT7Q9UBV7497
PXYLP1EXT2Q93063483
PXYLP1XYLT1Q86Y38464
PXYLP1XYLT2Q9H1B5440
PXYLP1MEOX2P50222433
PXYLP1EXTL3O43909431
PXYLP1TMEM196Q5HYL7421
PXYLP1XYLBO75191413

IntAct

27 interactions, top by confidence:

ABTypeScore
PXYLP1ADCY9psi-mi:“MI:0914”(association)0.500
PXYLP1ADCY9psi-mi:“MI:0915”(physical association)0.500
HTR3BTMEM223psi-mi:“MI:0914”(association)0.350
LDLRAD1GXYLT2psi-mi:“MI:0914”(association)0.350
PDGFRAGXYLT2psi-mi:“MI:0914”(association)0.350
CLEC12BGXYLT2psi-mi:“MI:0914”(association)0.350
CHRNB2TMEM131Lpsi-mi:“MI:0914”(association)0.350
CCL3KRBA1psi-mi:“MI:0914”(association)0.350
KLRC4RAP1BLpsi-mi:“MI:0914”(association)0.350
KLRC1METTL15psi-mi:“MI:0914”(association)0.350
SCGB2A2RTL8Cpsi-mi:“MI:0914”(association)0.350
C1orf54AGRNpsi-mi:“MI:0914”(association)0.350
HFEPODXLpsi-mi:“MI:0914”(association)0.350
CHRNEPODXLpsi-mi:“MI:0914”(association)0.350
KLRC2CLGNpsi-mi:“MI:0914”(association)0.350
LY86PLXNB2psi-mi:“MI:0914”(association)0.350
PTCH1PLXNB2psi-mi:“MI:0914”(association)0.350
INSLAMA5psi-mi:“MI:0914”(association)0.350
GALNT10PLXNA2psi-mi:“MI:0914”(association)0.350
PXYLP1GNPTABpsi-mi:“MI:0914”(association)0.350
FURINRHOBTB3psi-mi:“MI:0914”(association)0.350
ADCY9COX7A2Lpsi-mi:“MI:0914”(association)0.350
FURINESYT2psi-mi:“MI:0914”(association)0.350
SLC39A12ESYT2psi-mi:“MI:0914”(association)0.350
SLC39A7ESYT2psi-mi:“MI:0914”(association)0.350

BioGRID (39): PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), ADCY9 (Affinity Capture-MS), FURIN (Affinity Capture-MS), GNPTAB (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), PXYLP1 (Two-hybrid), PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS), PXYLP1 (Affinity Capture-MS)

ESM2 similar proteins: A8E7N9, E9Q6D8, F4J2C8, O43173, O75072, P13671, P54631, P61131, P61134, P61135, P61644, P85857, Q02745, Q0IHQ9, Q11206, Q19187, Q23534, Q4G148, Q5FVM7, Q5MD89, Q5RCM7, Q5SP46, Q5ZKI6, Q60HG0, Q619N4, Q64689, Q66H78, Q68G12, Q6DE37, Q6DH46, Q6GX83, Q6KB55, Q70D51, Q80TN4, Q811M5, Q8BHA9, Q8R507, Q8RXE1, Q8TE99, Q91Y74

Diamond homologs: A6H757, Q09448, Q09451, Q09549, Q0IHQ9, Q19076, Q54P71, Q54P72, Q5R8C0, Q66H78, Q8BHA9, Q8TE99, Q9NPH0, Q6DH46, A6H730, P15309, Q54PR9, Q8CE08

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

77 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance66
Likely benign3
Benign0

Top pathogenic / likely-pathogenic (0)

SpliceAI

1521 predictions. Top by Δscore:

VariantEffectΔscore
3:141231907:GGGCG:Gdonor_gain1.0000
3:141231908:GGCGG:Gdonor_gain1.0000
3:141260117:TCACA:Tacceptor_loss1.0000
3:141260118:CACA:Cacceptor_loss1.0000
3:141260119:ACAGG:Aacceptor_loss1.0000
3:141260120:CAG:Cacceptor_loss1.0000
3:141260121:AGGAC:Aacceptor_loss1.0000
3:141260122:GGAC:Gacceptor_gain1.0000
3:141260250:GTTCT:Gdonor_gain1.0000
3:141260255:G:GGdonor_gain1.0000
3:141278340:A:AGacceptor_gain1.0000
3:141278341:G:GAacceptor_gain1.0000
3:141278341:GTC:Gacceptor_gain1.0000
3:141278341:GTCC:Gacceptor_gain1.0000
3:141231908:GGCG:Gdonor_gain0.9900
3:141231909:GCG:Gdonor_gain0.9900
3:141231909:GCGG:Gdonor_gain0.9900
3:141231910:CGGTG:Cdonor_loss0.9900
3:141231911:GGTG:Gdonor_loss0.9900
3:141231912:G:Cdonor_loss0.9900
3:141231912:G:GGdonor_gain0.9900
3:141231913:T:Gdonor_loss0.9900
3:141231914:G:GGdonor_loss0.9900
3:141260121:A:AGacceptor_gain0.9900
3:141260121:AG:Aacceptor_gain0.9900
3:141260122:G:GAacceptor_gain0.9900
3:141260122:GG:Gacceptor_gain0.9900
3:141260122:GGA:Gacceptor_gain0.9900
3:141260122:GGACA:Gacceptor_gain0.9900
3:141260251:TTCT:Tdonor_gain0.9900

AlphaMissense

3180 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
3:141279438:G:TR100M1.000
3:141287426:T:AC160S0.999
3:141287427:G:CC160S0.999
3:141292399:A:CS213R0.999
3:141292401:T:AS213R0.999
3:141292401:T:GS213R0.999
3:141292670:G:AC303Y0.999
3:141278465:G:AC68Y0.998
3:141279432:G:TG98V0.998
3:141279438:G:CR100T0.998
3:141279439:G:CR100S0.998
3:141279439:G:TR100S0.998
3:141279485:T:AC116S0.998
3:141279485:T:CC116R0.998
3:141279486:G:AC116Y0.998
3:141279486:G:CC116S0.998
3:141287426:T:CC160R0.998
3:141287427:G:AC160Y0.998
3:141292501:T:CC247R0.998
3:141292820:T:CL353P0.998
3:141292898:A:CD379A0.998
3:141292898:A:TD379V0.998
3:141293021:G:CR420P0.998
3:141293065:T:AC435S0.998
3:141293066:G:CC435S0.998
3:141293101:T:AC447S0.998
3:141293102:G:CC447S0.998
3:141278464:T:AC68S0.997
3:141278465:G:CC68S0.997
3:141279425:C:AR96S0.997

dbSNP variants (sampled 300 via entrez): RS1000045846 (3:141288831 G>A), RS1000125232 (3:141240547 G>A), RS1000146448 (3:141271310 C>T), RS1000147214 (3:141276643 C>T), RS1000308327 (3:141265841 C>G), RS1000334426 (3:141259931 T>G), RS1000335897 (3:141241788 G>A), RS1000341660 (3:141258373 A>C), RS1000367070 (3:141259624 T>C), RS1000492664 (3:141240750 G>A), RS1000502000 (3:141254593 C>G,T), RS1000551925 (3:141283725 G>A), RS1000564175 (3:141235730 T>C), RS1000579601 (3:141236117 C>G), RS1000616426 (3:141265648 C>T)

Disease associations

OMIM: gene MIM:619732 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

0 total (0 of 0 shown, HPO-id order):

GWAS associations

12 associations (top):

StudyTraitp-value
GCST000477_10Cognitive performance8.000000e-06
GCST000522_8Height8.000000e-08
GCST004620_136Sum basophil neutrophil counts2.000000e-11
GCST004626_30Myeloid white cell count1.000000e-11
GCST004629_55Neutrophil count4.000000e-11
GCST008152_24Weight6.000000e-08
GCST008156_35Hip circumference adjusted for BMI6.000000e-07
GCST008161_16Waist circumference adjusted for body mass index5.000000e-06
GCST008163_510Height5.000000e-15
GCST008163_546Height5.000000e-10
GCST009391_432Metabolite levels9.000000e-06
GCST90002407_411White blood cell count9.000000e-19

EFO canonical traits (7, from GWAS)

EFO IDTrait name
EFO:0003926neuropsychological test
EFO:0004833neutrophil count
EFO:0005090basophil count
EFO:0004338body weight
EFO:0008039BMI-adjusted hip circumference
EFO:0007789BMI-adjusted waist circumference
EFO:0010384phosphatidylcholine 38:2 measurement

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (VIP=true, CPIC=false)

CTD chemical–gene interactions

50 total (human), top 30 by PubMed support.

ChemicalActions (top 5)PubMed papers
Valproic Acidincreases expression, increases methylation, affects expression6
trichostatin Aaffects cotreatment, decreases expression, increases expression3
Cyclosporinedecreases expression3
sodium arsenitedecreases expression, increases abundance2
Benzo(a)pyrenedecreases expression, increases methylation, affects methylation2
Phenylmercuric Acetateaffects cotreatment, decreases expression2
Tetrachlorodibenzodioxindecreases expression2
Cadmium Chloridedecreases expression, increases abundance, increases expression2
aristolochic acid Idecreases expression1
bisphenol Faffects cotreatment, increases expression1
methylmercuric chloridedecreases expression1
triphenyl phosphateaffects expression1
pirinixic acidaffects binding, increases activity, increases expression1
bisphenol Aaffects cotreatment, increases expression1
sulforaphanedecreases expression1
cupric chloridedecreases expression1
nickel sulfatedecreases expression1
coumarindecreases phosphorylation1
S-(1,2-dichlorovinyl)cysteineincreases expression, affects response to substance1
4-(5-benzo(1,3)dioxol-5-yl-4-pyridin-2-yl-1H-imidazol-2-yl)benzamideaffects cotreatment, decreases expression1
abrinedecreases expression1
dorsomorphinaffects cotreatment, decreases expression1
Sunitinibdecreases expression1
Acetaminophenincreases expression1
Arsenicdecreases expression, increases abundance1
Azathioprinedecreases expression1
Cadmiumincreases abundance, increases expression1
Carbamazepineaffects expression1
Dexamethasoneaffects cotreatment, increases expression1
Diazinonincreases methylation1

Clinical trials (associated diseases)

0 trials via MONDO — disease-level, not drug-specific.

No linked Atlas pages yet — the cross-entity mesh grows as the corpus expands.