LY9

gene
On this page

Also known as CD229mLY9SLAMF3hly9

Summary

LY9 (lymphocyte antigen 9, HGNC:6730) is a protein-coding gene on chromosome 1q23.3, encoding T-lymphocyte surface antigen Ly-9 (Q9HBG7). Self-ligand receptor of the signaling lymphocytic activation molecule (SLAM) family.

LY9 belongs to the SLAM family of immunomodulatory receptors (see SLAMF1; MIM 603492) and interacts with the adaptor molecule SAP (SH2D1A; MIM 300490) (Graham et al., 2006 [PubMed 16365421]).

Source: NCBI Gene 4063 — RefSeq curated summary.

At a glance

  • GWAS associations: 5
  • Clinical variants (ClinVar): 115 total
  • MANE Select transcript: NM_002348

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:6730
Approved symbolLY9
Namelymphocyte antigen 9
Location1q23.3
Locus typegene with protein product
StatusApproved
AliasesCD229, mLY9, SLAMF3, hly9
Ensembl geneENSG00000122224
Ensembl biotypeprotein_coding
OMIM600684
Entrez4063

Gene structure

Transcript identifiers

Ensembl transcripts: 17 — 11 protein_coding, 3 protein_coding_CDS_not_defined, 2 nonsense_mediated_decay, 1 retained_intron

ENST00000263285, ENST00000368035, ENST00000368037, ENST00000368039, ENST00000392203, ENST00000471816, ENST00000474998, ENST00000479663, ENST00000480837, ENST00000485624, ENST00000490902, ENST00000873847, ENST00000873848, ENST00000873849, ENST00000873850, ENST00000873851, ENST00000873852

RefSeq mRNA: 4 — MANE Select: NM_002348 NM_001033667, NM_001261456, NM_001261457, NM_002348

CCDS: CCDS30916, CCDS30917, CCDS65695, CCDS65696

Canonical transcript exons

ENST00000263285 — 10 exons

ExonStartEnd
ENSE00000789190160819321160819374
ENSE00000789192160824181160824249
ENSE00000958829160796174160796311
ENSE00000958831160823465160823796
ENSE00001166088160816594160816863
ENSE00001228897160818218160818319
ENSE00001228917160827748160828255
ENSE00003500890160799753160800082
ENSE00003540463160813636160813911
ENSE00003634771160814420160814761

Expression profiles

Bgee: expression breadth ubiquitous, 181 present calls, max score 92.00.

FANTOM5 (CAGE): breadth broad, TPM avg 7.7981 / max 648.1966, expressed in 347 samples.

FANTOM5 promoters (5 alternative TSS)

Promoter IDTPM avgSamples expressed
61826.1085326
61831.0305181
61800.4329121
61810.129568
61790.096659

Top tissues by expression

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

TissueAnatomy IDExpression scoreQuality
granulocyteCL:000009492.00gold quality
lymph nodeUBERON:000002991.21gold quality
buccal mucosa cellCL:000233690.86gold quality
bloodUBERON:000017889.44gold quality
spleenUBERON:000210688.10gold quality
bone marrow cellCL:000209287.05gold quality
colonic epitheliumUBERON:000039785.61gold quality
bone marrowUBERON:000237184.74gold quality
superficial temporal arteryUBERON:000161483.42gold quality
vermiform appendixUBERON:000115482.99gold quality
trabecular bone tissueUBERON:000248382.29gold quality
tonsilUBERON:000237282.26gold quality
epithelium of nasopharynxUBERON:000195182.08gold quality
nasopharynxUBERON:000172882.07gold quality
amniotic fluidUBERON:000017380.25gold quality
caecumUBERON:000115379.99gold quality
thymusUBERON:000237079.08gold quality
olfactory bulbUBERON:000226477.77gold quality
type B pancreatic cellCL:000016977.71gold quality
parotid glandUBERON:000183176.34gold quality
rectumUBERON:000105276.10gold quality
small intestine Peyer’s patchUBERON:000345475.14gold quality
leukocyteCL:000073874.73gold quality
mucosa of transverse colonUBERON:000499174.35gold quality
small intestineUBERON:000210873.53gold quality
gall bladderUBERON:000211073.38gold quality
mononuclear cellCL:000084273.00gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047372.97gold quality
monocyteCL:000057672.93gold quality
jejunal mucosaUBERON:000039972.06gold quality

Single-cell (SCXA)

Detected in 8 experiment(s), a significant marker in 7.

ExperimentMarker?Max mean expression
E-GEOD-135922yes878.75
E-CURD-122yes93.67
E-CURD-88yes51.49
E-ANND-3yes36.43
E-MTAB-8142yes14.73
E-MTAB-6678yes4.60
E-MTAB-9067yes4.53
E-ENAD-27no3.93

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

21 targeting LY9, 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-1252-5P100.0069.802774
HSA-MIR-4673100.0066.641490
HSA-MIR-6499-3P99.9066.381212
HSA-MIR-1211999.8768.351653
HSA-MIR-4649-3P99.5666.901783
HSA-MIR-450699.3467.47526
HSA-MIR-1211399.3267.541072
HSA-MIR-429199.2068.882969
HSA-MIR-450499.1069.141328
HSA-MIR-4650-3P99.0168.391062
HSA-MIR-6770-5P98.9766.761853
HSA-MIR-3074-5P98.8266.561414
HSA-MIR-453998.7867.18888
HSA-MIR-58198.3967.42835
HSA-MIR-59998.3266.991037
HSA-MIR-59598.2567.44699
HSA-MIR-392197.8167.451431
HSA-MIR-6747-3P97.7364.841596
HSA-MIR-4653-5P97.2267.721429
HSA-MIR-59296.5967.59817
HSA-MIR-3675-5P95.9065.80474

Literature-anchored findings (GeneRIF, showing 22)

  • Both mouse and human novel Ly9 genes mapped close to the CD229 gene in a region where other members of the CD150 family have also been mapped. (PMID:12242590)
  • CD229, but not other members of the CD150 family, directly bind Grb2. (PMID:15879090)
  • CD229 is a self-ligand, interacting through its N-terminal V-like domain which contains three amino acid residues critical for the homophilic binding interaction. (PMID:15905546)
  • A family-based association study in the United Kingdom and Canada identifies genetic variants in the LY9 promoter and coding region contributing to systemic lupus erythematosus susceptibility. (PMID:18216865)
  • CD229 is specifically over-expressed on myeloma cells including their clonogenic precursors and contributes to their malignant phenotype. (PMID:21606160)
  • SLAMF3 and SLAMF6 T cell surface expression and IL-17 levels significantly correlate with disease activity in systemic lupus erythematosus patients (PMID:22184727)
  • Data indicate that the dominance of the SLAMF3/SLAMF6 pathway in inducing IL-17A production can be attributed to an increased nuclear abundance and recruitment of RORgammat to the IL17A promoter. (PMID:22989874)
  • These results suggest a role for CD319 and CD229 in the systemic lupus erythematosus disease process. (PMID:23956418)
  • SLAMF3 is an inhibitor of hepatocellular carcinoma cell proliferation and tumor progression. (PMID:24376606)
  • Results revealed that SLAMF3 plays a role during hepatitis C virus entry, likely by enhancing entry of viral particle within hepatocytes. (PMID:24927415)
  • study showed CD229 is overexpressed on the malignant plasma cells of patients across all types of plasma cell dyscrasias including multiple myeloma; CD229 is also expressed on the surface of a fraction of cells carrying the phenotype of chemotherapy-resistant and myeloma-propagating cells within the patients’ bone marrow (PMID:26001047)
  • the Val602 variant of the non-synonymous single nucleotide polymorphism (SNP) rs509749 in the SLAM family member CD229 (Ly9, SLAMF3) has a two-fold lower affinity compared with the SLE-associated Met602 variant for the small adaptor protein SAP (PMID:26221972)
  • CD229 Expression on Bone Marrow Plasma Cells from Patients with Multiple Myeloma and Monoclonal Gammopathies of Uncertain Significance. (PMID:26303094)
  • the results presented here suggest that the tumor suppressor potential of SLAMF3 occurs through activation of Retinoblastoma protein that represses PLK1. (PMID:26799423)
  • Authors make a strong correlation between induced SLAMF3 overexpression and the specific loss of MRP-1 expression and its functionalities as a drugs resistance transporter. (PMID:27081035)
  • CD229 is a reliable new alternative PC-gating marker in routine laboratory practice. (PMID:29316178)
  • Viral Ly9 homologs are new manipulators of host immunity. (Review) (PMID:30791129)
  • SLAMF3 expression is upregulated on T cells from type 2 diabetes patients and associated with T-cell activation and cytokine production. (PMID:31332162)
  • SLAMF3-Mediated Signaling via ERK Pathway Activation Promotes Aggressive Phenotypic Behaviors in Multiple Myeloma. (PMID:31974290)
  • The SLAMF3 rs509749 polymorphism correlates with malignant potential in multiple myeloma. (PMID:32818503)
  • CD229 interacts with RASAL3 to activate RAS/ERK pathway in multiple myeloma proliferation. (PMID:36445333)
  • SLAMF3 promotes Th17 differentiation and is reversed by iguratimod through JAK1/STAT3 pathway in primary Sjogren’s syndrome. (PMID:38061117)

Cross-species orthologs

3 orthologs

OrganismSymbolGene ID
danio_reriosi:cabz01074946.1ENSDARG00000090396
mus_musculusLy9ENSMUSG00000004707
rattus_norvegicusLy9ENSRNOG00000025069

Paralogs (9): SLAMF7 (ENSG00000026751), CD84 (ENSG00000066294), CD2 (ENSG00000116824), SLAMF1 (ENSG00000117090), CD48 (ENSG00000117091), CD244 (ENSG00000122223), SLAMF8 (ENSG00000158714), SLAMF9 (ENSG00000162723), SLAMF6 (ENSG00000162739)

Protein

Protein identifiers

T-lymphocyte surface antigen Ly-9Q9HBG7 (reviewed: Q9HBG7)

Alternative names: Cell surface molecule Ly-9, Lymphocyte antigen 9, SLAM family member 3, Signaling lymphocytic activation molecule 3

All UniProt accessions (6): A0A0C4DFU4, Q5VYH9, Q5VYI1, Q9HBG7, R4GNG7, V9GY30

UniProt curated annotations — full annotation on UniProt →

Function. Self-ligand receptor of the signaling lymphocytic activation molecule (SLAM) family. SLAM receptors triggered by homo- or heterotypic cell-cell interactions are modulating the activation and differentiation of a wide variety of immune cells and thus are involved in the regulation and interconnection of both innate and adaptive immune response. Activities are controlled by presence or absence of small cytoplasmic adapter proteins, SH2D1A/SAP and/or SH2D1B/EAT-2. May participate in adhesion reactions between T lymphocytes and accessory cells by homophilic interaction. Promotes T-cell differentiation into a helper T-cell Th17 phenotype leading to increased IL-17 secretion; the costimulatory activity requires SH2D1A. Promotes recruitment of RORC to the IL-17 promoter. May be involved in the maintenance of peripheral cell tolerance by serving as a negative regulator of the immune response. May disable autoantibody responses and inhibit IFN-gamma secretion by CD4(+) T-cells. May negatively regulate the size of thymic innate CD8(+) T-cells and the development of invariant natural killer T (iNKT) cells.

Subunit / interactions. Interacts with SH2D1A, SH2D1B and INPP5D. Interacts (via phosphorylated cytoplasmic domain) with PTPN11; the interaction is blocked by SH2D1A.

Subcellular location. Membrane. Cell membrane.

Tissue specificity. Increased surface expression on T-cells of systemic lupus erythematosus (SLE) patients.

Domain organisation. The ITSMs (immunoreceptor tyrosine-based switch motifs) with the consensus sequence T-X-Y-X-X-[VI] present in SLAM family receptors have overlapping specificity for activating and inhibitory SH2 domain-containing binding partners. Especially they mediate the interaction with the SH2 domain of SH2D1A and SH2D1B. A ’three-pronged’ mechanism is proposed involving threonine (position -2), phosphorylated tyrosine (position 0) and valine/isoleucine (position +3).

Isoforms (4)

UniProt IDNamesCanonical?
Q9HBG7-11yes
Q9HBG7-22
Q9HBG7-33
Q9HBG7-44

RefSeq proteins (4): NP_001028839, NP_001248385, NP_001248386, NP_002339* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR003599Ig_subDomain
IPR007110Ig-like_domDomain
IPR013783Ig-like_foldHomologous_superfamily
IPR015631CD2/SLAM_rcptFamily
IPR036179Ig-like_dom_sfHomologous_superfamily

UniProt features (33 total): glycosylation site 8, disulfide bond 4, splice variant 4, domain 4, region of interest 2, short sequence motif 2, topological domain 2, signal peptide 1, chain 1, compositionally biased region 1, modified residue 1, transmembrane region 1, sequence variant 1, sequence conflict 1

Structure

Experimental structures (PDB)

0 structures.

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q9HBG7-F166.270.24

Functional residue map

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

Post-translational modifications (1): 603

Disulfide bonds (4): 172–242, 178–222, 377–446, 383–427

Glycosylation sites (8): 68, 95, 120, 169, 173, 285, 413, 424

Function

Pathways and Gene Ontology

Reactome pathways

0 pathways

MSigDB gene sets: 253 (showing top): GSE18804_SPLEEN_MACROPHAGE_VS_COLON_TUMORAL_MACROPHAGE_UP, MORF_MSH3, MODULE_255, GOBP_T_CELL_ACTIVATION_INVOLVED_IN_IMMUNE_RESPONSE, MORF_BRCA1, GOBP_ALPHA_BETA_T_CELL_DIFFERENTIATION, MODULE_317, GOCC_CELL_SURFACE, GOBP_POSITIVE_REGULATION_OF_CYTOKINE_PRODUCTION, GOBP_CELL_ACTIVATION_INVOLVED_IN_IMMUNE_RESPONSE, GOBP_CD4_POSITIVE_ALPHA_BETA_T_CELL_ACTIVATION, GOBP_DEFENSE_RESPONSE_TO_OTHER_ORGANISM, GOBP_T_CELL_DIFFERENTIATION_INVOLVED_IN_IMMUNE_RESPONSE, GOBP_CYTOKINE_PRODUCTION, GOBP_POSITIVE_T_CELL_SELECTION

GO Biological Process (8): immune response (GO:0006955), cell adhesion (GO:0007155), positive regulation of interleukin-17 production (GO:0032740), T cell activation (GO:0042110), innate immune response (GO:0045087), T-helper 17 cell lineage commitment (GO:0072540), adaptive immune response (GO:0002250), immune system process (GO:0002376)

GO Molecular Function (1): protein binding (GO:0005515)

GO Cellular Component (4): plasma membrane (GO:0005886), external side of plasma membrane (GO:0009897), cell surface (GO:0009986), membrane (GO:0016020)

GO top-level categories

Rollup of top GO terms by namespace:

CategoryTerms
immune response2
cellular anatomical structure2
immune system process1
response to stimulus1
cellular process1
positive regulation of cytokine production1
interleukin-17 production1
regulation of interleukin-17 production1
lymphocyte activation1
defense response to symbiont1
T-helper cell lineage commitment1
T-helper 17 cell differentiation1
biological_process1
binding1
membrane1
cell periphery1
plasma membrane1
cell surface1
side of membrane1

Protein interactions and networks

STRING

1324 interactions, top by confidence (×1000):

Protein AProtein BPartner UniProtScore
LY9SH2D1BO14796937
LY9SH2D1AO60880932
LY9CD48P09326925
LY9CD2P06729750
LY9SLAMF1Q13291637
LY9SLAMF8Q9P0V8627
LY9CD58P19256589
LY9PTPN11Q06124575
LY9NCR1O76036511
LY9SRCP12931495
LY9DOK2O60496479
LY9GRB2P29354464
LY9CD244Q9BZW8461
LY9VAV1P15498459
LY9ATP1A2P50993458

IntAct

6 interactions, top by confidence:

ABTypeScore
SH2D1ALY9psi-mi:“MI:0407”(direct interaction)0.440
INPP5DLY9psi-mi:“MI:0407”(direct interaction)0.440
LY9LY9psi-mi:“MI:0407”(direct interaction)0.440
LY9GUSBpsi-mi:“MI:0914”(association)0.350
LY9purLpsi-mi:“MI:0915”(physical association)0.000

BioGRID (12): AP2M1 (Two-hybrid), LY9 (Affinity Capture-Western), LY9 (Two-hybrid), LY9 (Affinity Capture-Western), LY9 (Two-hybrid), PTPN11 (Affinity Capture-Western), Sh2d1b1 (Affinity Capture-Western), EDEM3 (Affinity Capture-MS), GUSB (Affinity Capture-MS), HLA-F (Affinity Capture-MS), DDX19B (Affinity Capture-MS), IDUA (Affinity Capture-MS)

ESM2 similar proteins: A0A0B4J1G0, A0A0B4J1L0, A0A0G2KBC9, A1YIY0, A8MTB9, B6A8R8, C0HJX2, C0HJX3, E2RP87, H0VDZ8, P08637, P09326, P12314, P23505, P26151, P43626, P43627, P43628, P43631, P43632, P83555, P83556, Q01965, Q13291, Q14952, Q14953, Q14954, Q28942, Q2YHT5, Q61400, Q61450, Q640U3, Q68EV1, Q68SN8, Q6UX41, Q6UXE8, Q6UY09, Q6XJV4, Q6XPU4, Q7TST0

Diamond homologs: A4FUY1, A6QQC6, A8MVW5, D3YXG0, D3ZB51, D3ZQE1, E9PZ19, O08775, P13595, P13596, P16573, P31809, P35968, P52583, Q00889, Q14CZ8, Q3KPI0, Q4VAH7, Q52KR2, Q62845, Q640R3, Q69Z26, Q9D2Z1, Q9HBG7, Q9UPX0, Q01965, Q18PI6, Q8BHK6, Q96A28, Q96DU3, Q9D780, Q9NQ25, Q9UIB8, O94898, P35918, Q5GIT4, Q810J1, Q9ET39, P11464, Q00887

SIGNOR signaling

0 interactions.

Disease & clinical

Clinical variants and AI predictions

ClinVar

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

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance92
Likely benign11
Benign2

Top pathogenic / likely-pathogenic (0)

SpliceAI

1760 predictions. Top by Δscore:

VariantEffectΔscore
1:160796310:GG:Gdonor_gain1.0000
1:160796311:GG:Gdonor_gain1.0000
1:160816725:G:GTdonor_gain1.0000
1:160796307:CATGG:Cdonor_gain0.9900
1:160796309:TGG:Tdonor_gain0.9900
1:160796309:TGGG:Tdonor_loss0.9900
1:160796310:GGG:Gdonor_gain0.9900
1:160796310:GGGTA:Gdonor_loss0.9900
1:160796311:GGTAA:Gdonor_loss0.9900
1:160796312:G:GGdonor_gain0.9900
1:160796312:GT:Gdonor_loss0.9900
1:160796313:TAAG:Tdonor_loss0.9900
1:160799899:C:Gacceptor_gain0.9900
1:160814762:G:GGdonor_gain0.9900
1:160818318:GT:Gdonor_gain0.9900
1:160818320:G:GGdonor_gain0.9900
1:160796308:ATGG:Adonor_gain0.9800
1:160800079:TATGG:Tdonor_loss0.9800
1:160800080:ATGG:Adonor_loss0.9800
1:160800081:TGG:Tdonor_loss0.9800
1:160800082:GGTGA:Gdonor_loss0.9800
1:160800083:GTG:Gdonor_loss0.9800
1:160800084:T:Adonor_loss0.9800
1:160800085:G:GTdonor_loss0.9800
1:160818314:G:GTdonor_gain0.9800
1:160827746:AGGT:Aacceptor_gain0.9800
1:160827747:GGTG:Gacceptor_gain0.9800
1:160800086:AGT:Adonor_loss0.9700
1:160800087:G:Cdonor_loss0.9700
1:160816826:G:GTdonor_gain0.9700

AlphaMissense

4280 scored. Top likely-pathogenic:

VariantProtein changeam_pathogenicity
1:160813754:G:CW191C0.989
1:160813754:G:TW191C0.989
1:160799868:G:CW80C0.987
1:160799868:G:TW80C0.987
1:160799866:T:AW80R0.986
1:160799866:T:CW80R0.986
1:160813845:T:AC222S0.986
1:160813846:G:CC222S0.986
1:160800064:T:CF146L0.985
1:160800066:C:AF146L0.985
1:160800066:C:GF146L0.985
1:160813752:T:AW191R0.985
1:160813752:T:CW191R0.985
1:160813845:T:CC222R0.984
1:160813847:C:GC222W0.984
1:160800013:T:GY129D0.982
1:160813713:T:CC178R0.981
1:160813846:G:AC222Y0.981
1:160813713:T:AC178S0.979
1:160813714:G:CC178S0.979
1:160814535:G:CW282C0.978
1:160814535:G:TW282C0.978
1:160814692:T:GY335D0.977
1:160813708:T:CL176P0.974
1:160814533:T:AW282R0.974
1:160814533:T:CW282R0.974
1:160816800:T:AC427S0.974
1:160816801:G:CC427S0.974
1:160800020:C:AA131D0.973
1:160816709:G:CW396C0.972

dbSNP variants (sampled 300 via entrez): RS1000015217 (1:160828446 T>A), RS1000058821 (1:160801974 G>A,T), RS1000111302 (1:160804457 T>G), RS1000162886 (1:160808757 T>C,G), RS1000258158 (1:160822485 C>T), RS1000376027 (1:160797156 A>G), RS1000462995 (1:160810668 C>T), RS1000505412 (1:160806254 C>T), RS1000569578 (1:160807663 G>A), RS1000754138 (1:160794729 A>G), RS1001134693 (1:160819110 C>CAG), RS1001289060 (1:160816184 C>A,T), RS1001327563 (1:160797798 T>C), RS1001362819 (1:160804189 C>T), RS1001532608 (1:160821159 A>C)

Disease associations

OMIM: gene MIM:600684 | disease phenotypes:

GenCC curated gene-disease

Mondo (0):

Orphanet (0):

HPO phenotypes

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

GWAS associations

5 associations (top):

StudyTraitp-value
GCST004627_130Lymphocyte count3.000000e-11
GCST004632_97Lymphocyte percentage of white cells2.000000e-11
GCST90002388_629Lymphocyte count5.000000e-39
GCST90002389_75Lymphocyte percentage of white cells4.000000e-18
GCST90002407_8White blood cell count6.000000e-09

EFO canonical traits (2, from GWAS)

EFO IDTrait name
EFO:0004587lymphocyte count
EFO:0007993lymphocyte percentage of leukocytes

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

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

CTD chemical–gene interactions

23 total (human), top 23 by PubMed support.

ChemicalActions (top 5)PubMed papers
sodium arseniteincreases expression2
Nickelincreases expression2
triphenyl phosphateaffects expression1
perfluorooctanoic acidincreases expression1
S-(1,2-dichlorovinyl)cysteineaffects response to substance, increases expression, affects cotreatment, decreases expression1
avobenzoneincreases expression1
di-n-butylphosphoric acidaffects expression1
CGP 52608affects binding, increases reaction1
K 7174decreases expression1
(+)-JQ1 compounddecreases expression1
theaflavin-3,3’-digallateaffects expression1
Arsenicaffects methylation1
Aspirinincreases expression1
Benzo(a)pyreneaffects methylation1
Cadmiumincreases expression1
Hydrogen Peroxidedecreases expression1
Ibuprofendecreases expression1
Lipopolysaccharidesincreases expression, affects cotreatment, decreases expression, affects response to substance1
Testosteronedecreases expression1
Tobacco Smoke Pollutionincreases expression1
Urethanedecreases expression1
Antirheumatic Agentsdecreases expression1
Cadmium Chlorideincreases expression1

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.