Natural Product: NPC187036

Natural Product IDNPC187036
Common Name
?
The InCHIKey will be temporarily assigned as the "Common Name" if no IUPAC name or alternative short name is available.
Isocryptolepine
IUPAC Name 5-methylindolo[3,2-c]quinoline
Synonyms Isocryptolepine
Synthetic Gene Cluster n.a.
ChEMBL Identifier CHEMBL596333
PubChem CID 380925
Chemical Classification
  • CHEMONTID:0000000 [Organic compounds]
    • [CHEMONTID:0000002] Organoheterocyclic compounds
      • [CHEMONTID:0001253] Quinolines and derivatives
        • [CHEMONTID:0000061] Indoloquinolines

The Chemical Classification was calculated by Classyfire, a software for chemical taxonomy calculation. Reference: DOI:10.1186/s13321-016-0174-y.

  Chemical Representations

Standard InCHIKey GLYLOCYYFNTVGX-UHFFFAOYSA-N
Standard InCHI InChI=1S/C16H12N2/c1-18-10-13-11-6-2-4-8-14(11)17-16(13)12-7-3-5-9-15(12)18/h2-10H,1H3
SMILES Cn1cc2-c(c3ccccc13)nc1ccccc21

  Calculated Properties

Physi-Chem Properties

Molecular Weight:   232.1 Volume:   251.968
?
Van der Waals volume.
Dense:   0.921 LogP:   4.098
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The logarithm of the n-octanol/water distribution coefficients.
logD7.4:   3.529
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The logarithm of the n-octanol/water distribution coefficient at pH=7.4.
LogS:   -4.553
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The logarithm of aqueous solubility value.
Rotatable Bonds:   0.0 Rigid Bonds:   20.0
TPSA:   17.82
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Topological Polar Surface Area.
H-Bond Acceptor:   2.0
H-Bond Donor:   0.0 Rings:   4.0
Heavy Atoms:   2.0

MedChem Properties

QED Drug-Likeness Score:   0.45 GASA:   1.0
?
GASA represents the probability of being difficult to synthesize, ranging from 0 to 1.
Synthetic Accessibility Score:   1.914 Fsp3:   0.062
MCE-18:   19.0
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MCE-18 stands for medicinal chemistry evolution.MCE-18≥45 is considered a suitable value.
Lipinski Rule-of-5:   Rejected
Pfizer Rule:   Accepted GSK Rule:   Accepted
Golden Triangle Rule:   Rejected BMS Rule:   0
Chelating Alert:   0 PAINS Alert:   0
Colloidal aggregators:   0.497 Fluc inhibitor:   0.618
?
The fluc inhibitor value is the probability of being fLuc inhibitors, within the range of 0 to 1.
Blue fluorescence:   0.912
?
The blue fluorescence value is the probability of being blue fluorescence, within the range of 0 to 1
Green fluorescence:   0.284
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The green fluorescence value is the probability of being green fluorescence, within the range of 0 to 1
Reactive compounds:   0.025 Promiscuous compounds:   0.516

ADMET Properties (ADMETlab3.0)

ADMET: Absorption

Caco-2 Permeability:   -4.268 MDCK Permeability:   -4.526
Pgp-inhibitor:   0.954 Pgp-substrate:   0.315
PAMPA:   0.024
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The experimental data for Peff was logarithmically transformed (logPeff). Molecules with log Peff values below 2.0 were classified as low-permeability (Category 0), while those with log Peff values exceeding 2.5 were classified as high-permeability (Category 1).
Human Intestinal Absorption (HIA):   0.0
20% Bioavailability (F20%):   0.074 30% Bioavailability (F30%):   0.356
50% Bioavailability (F50%):   0.96

ADMET: Distribution

Blood-Brain-Barrier Penetration (BBB):   0.992 MRP1:   0.864
Plasma Protein Binding (PPB):   97.304% Volume Distribution (VD):   0.199
Fu: 3.193%
?
The fraction unbound in plasms.
OATP1B1 inhibitor:   0.422
OATP1B3 inhibitor:   0.704 BCRP inhibitor:   0.923
BSEP inhibitor:   0.999

ADMET: Metabolism

CYP1A2-inhibitor:   0.999 CYP1A2-substrate:   0.443
CYP2C19-inhibitor:   0.38 CYP2C19-substrate:   0.008
CYP2C9-inhibitor:   0.918 CYP2C9-substrate:   0.61
CYP2D6-inhibitor:   1.0 CYP2D6-substrate:   0.983
CYP3A4-inhibitor:   0.974 CYP3A4-substrate:   0.662
CYP2B6-substrate:   0.404 CYP2C8-inhibitor:   0.959
HLM stability:   0.979
?
Human liver microsomal (HLM) stability. Category 0: stable+ (HLM > 30 min); Category 1: unstable- (HLM ≤ 30 min). The output value is the probability of human liver microsomal instability, where a value closer to 1 indicates a higher likelihood of instability.

ADMET: Excretion

Clearance (CL):  7.434 Half-life (T1/2):  0.799

ADMET: Toxicity

hERG Blockers:  0.337 hERG Blockers (10um):  0.663
Human Hepatotoxicity (H-HT):  0.771 Drug-induced Liver Injury (DILI):  0.745
AMES Toxicity:  0.862 Rat Oral Acute Toxicity:  0.431
Maximum Recommended Daily Dose:  0.609 Skin Sensitization:  0.525
Carcinogencity:  0.774 Eye Corrosion:  0.001
Eye Irritation:  0.852 Respiratory Toxicity:  0.823
Drug-induced Neurotoxicity:  0.957 Ototoxicity:  0.496
Hematotoxicity:  0.635 Drug-induced Nephrotoxicity:  0.671
Genotoxicity:  0.78 RPMI-8226 Immunitoxicity:  0.093
A549 Cytotoxicity:  0.312 Hek293 Cytotoxicity:  0.543
BCF:   2.113
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Bioconcentration factors are used for considering secondary poisoning potential and assessing risks to human health via the food chain. The unit is -log10[(mg/L)/(1000*MW)].
IGC50:   4.17
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48 hour Tetrahymena pyriformis IGC50. The unit of IGC50 is -log10[(mg/L)/(1000*MW)].
LC50DM:   4.622
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48 hour Daphnia magna LC50. The unit of LC50DM is -log10[(mg/L)/(1000*MW)].
LC50FM:   4.667
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96 hour fathead minnow LC50. The unit of LC50FM is -log10[(mg/L)/(1000*MW)].

  Species Source

Organism ID Organism Name Taxonomy Level Family SuperKingdom Isolation Part Collection Location Collection Time Reference
NPO20237 Poecillastra wondoensis Species Vulcanellidae Eukaryota n.a. n.a. n.a. PMID[14640526]
NPO20237 Poecillastra wondoensis Species Vulcanellidae Eukaryota n.a. depth of 25 m off the shore of Keomun Island, Korea 2004-AUG PMID[18407691]
NPO20912 Wisteria brachybotrys Species Fabaceae Eukaryota n.a. n.a. n.a. PMID[2853205]
NPO20169 Alseodaphne perakensis Species Lauraceae Eukaryota n.a. n.a. n.a. PMID[31266357]
NPO14826 Streptomyces mobaraensis Species Streptomycetaceae Bacteria n.a. n.a. n.a. PMID[32998509]
NPO11155 Ambrosia maritima Species Asteraceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO24783 Erysimum diffusum Species Brassicaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO20912 Wisteria brachybotrys Species Fabaceae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO20237 Poecillastra wondoensis Species Vulcanellidae Eukaryota n.a. n.a. n.a. Database[COCONUT]
NPO14826 Streptomyces mobaraensis Species Streptomycetaceae Bacteria n.a. n.a. n.a. Database[COCONUT]
NPO11155 Ambrosia maritima Species Asteraceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO24783 Erysimum diffusum Species Brassicaceae Eukaryota n.a. n.a. n.a. Database[HerDing]
NPO24783 Erysimum diffusum Species Brassicaceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO11155 Ambrosia maritima Species Asteraceae Eukaryota n.a. n.a. n.a. Database[TCMID]
NPO11155 Ambrosia maritima Species Asteraceae Eukaryota n.a. n.a. n.a. Database[TCM_Taiwan]
NPO18755 Fumaria judaica Species Papaveraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO21890 Epidendrum moseni Species Orchidaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO14826 Streptomyces mobaraensis Species Streptomycetaceae Bacteria n.a. n.a. n.a. Database[UNPD]
NPO20299 Strongylophora durissima n.a. n.a. n.a. n.a. n.a. n.a. Database[UNPD]
NPO17131 Yucca periculosa Species Asparagaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO20237 Poecillastra wondoensis Species Vulcanellidae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO20912 Wisteria brachybotrys Species Fabaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO24783 Erysimum diffusum Species Brassicaceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO11155 Ambrosia maritima Species Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO20989 Calea integrifolia Species Asteraceae Eukaryota n.a. n.a. n.a. Database[UNPD]
NPO20169 Alseodaphne perakensis Species Lauraceae Eukaryota n.a. n.a. n.a. Database[UNPD]

Note for Reference:
In addition to directly collecting NP source organism data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated them from below databases:
UNPD: Universal Natural Products Database [PMID: 23638153].
StreptomeDB: a database of streptomycetes natural products [PMID: 33051671].
TM-MC: a database of medicinal materials and chemical compounds in Northeast Asian traditional medicine [PMID: 26156871].
TCM@Taiwan: a Traditional Chinese Medicine database [PMID: 21253603].
TCMID: a Traditional Chinese Medicine database [PMID: 29106634].
TCMSP: The traditional Chinese medicine systems pharmacology database and analysis platform [PMID: 24735618].
HerDing: a herb recommendation system to treat diseases using genes and chemicals [PMID: 26980517].
MetaboLights: a metabolomics database [PMID: 27010336].
FooDB: a database of constituents, chemistry and biology of food species [www.foodb.ca].



  NP Quantity Composition/Concentration

Organism ID Organism Name Organism Material Preparation Organism Part NP Quantity (Standard) NP Quantity (Minimum) NP Quantity (Maximum) Quantity Unit Reference

Note for Reference:
In addition to directly collecting NP quantitative data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated NP quantitative records for specific NP domains (e.g., NPS from foods or herbs) from domain-specific databases. These databases include:
DUKE: Dr. Duke's Phytochemical and Ethnobotanical Databases.
PHENOL EXPLORER: is the first comprehensive database on polyphenol content in foods [PMID: 24103452], its homepage can be accessed at here.
FooDB: a database of constituents, chemistry and biology of food species [www.foodb.ca].



 Biological Activity

Molecular-level activity

Target ID Target Type Target Name Target Organism Activity Type Activity Relation Value Unit Reference

In vitro activity

Target ID Target Type Target Name Target Organism Activity Type Activity Relation Value Unit Reference
NPT368 Cell line SN12C Homo sapiens GI50 n.a. 1566.75 nM PubChem BioAssay data set
NPT367 Cell line MDA-N Homo sapiens GI50 n.a. 2037.04 nM PubChem BioAssay data set
NPT369 Cell line ACHN Homo sapiens GI50 n.a. 1706.08 nM PubChem BioAssay data set
NPT370 Cell line NCI-H23 Homo sapiens GI50 n.a. 1506.61 nM PubChem BioAssay data set
NPT372 Cell line HOP-92 Homo sapiens GI50 n.a. 1914.26 nM PubChem BioAssay data set
NPT371 Cell line UO-31 Homo sapiens GI50 n.a. 1399.59 nM PubChem BioAssay data set
NPT116 Cell line HL-60 Homo sapiens GI50 n.a. 2037.04 nM PubChem BioAssay data set
NPT90 Cell line DU-145 Homo sapiens GI50 n.a. 2312.06 nM PubChem BioAssay data set
NPT373 Cell line SK-MEL-5 Homo sapiens GI50 n.a. 1698.24 nM PubChem BioAssay data set
NPT374 Cell line SF-539 Homo sapiens GI50 n.a. 1721.87 nM PubChem BioAssay data set
NPT375 Cell line Malme-3M Homo sapiens GI50 n.a. 2275.1 nM PubChem BioAssay data set
NPT111 Cell line K562 Homo sapiens GI50 n.a. 1940.89 nM PubChem BioAssay data set
NPT376 Cell line A498 Homo sapiens GI50 n.a. 1741.81 nM PubChem BioAssay data set
NPT377 Cell line OVCAR-3 Homo sapiens GI50 n.a. 2355.05 nM PubChem BioAssay data set
NPT112 Cell line MOLT-4 Homo sapiens GI50 n.a. 420.73 nM PubChem BioAssay data set
NPT378 Cell line NCI/ADR-RES Homo sapiens GI50 n.a. 1717.91 nM PubChem BioAssay data set
NPT379 Cell line HOP-62 Homo sapiens GI50 n.a. 1592.21 nM PubChem BioAssay data set
NPT381 Cell line OVCAR-8 Homo sapiens GI50 n.a. 1595.88 nM PubChem BioAssay data set
NPT380 Cell line U-251 Homo sapiens GI50 n.a. 2415.46 nM PubChem BioAssay data set
NPT382 Cell line OVCAR-5 Homo sapiens GI50 n.a. 2142.89 nM PubChem BioAssay data set
NPT82 Cell line MDA-MB-231 Homo sapiens GI50 n.a. 2349.63 nM PubChem BioAssay data set
NPT383 Cell line SNB-19 Homo sapiens GI50 n.a. 2964.83 nM PubChem BioAssay data set
NPT385 Cell line SR Homo sapiens GI50 n.a. 397.19 nM PubChem BioAssay data set
NPT384 Cell line TK-10 Homo sapiens GI50 n.a. 3926.45 nM PubChem BioAssay data set
NPT323 Cell line SW-620 Homo sapiens GI50 n.a. 1122.02 nM PubChem BioAssay data set
NPT386 Cell line KM12 Homo sapiens GI50 n.a. 2079.7 nM PubChem BioAssay data set
NPT455 Cell line NCI-H522 Homo sapiens GI50 n.a. 1406.05 nM PubChem BioAssay data set
NPT387 Cell line M14 Homo sapiens GI50 n.a. 1625.55 nM PubChem BioAssay data set
NPT389 Cell line RPMI-8226 Homo sapiens GI50 n.a. 1534.62 nM PubChem BioAssay data set
NPT456 Cell line OVCAR-4 Homo sapiens GI50 n.a. 1918.67 nM PubChem BioAssay data set
NPT390 Cell line LOX IMVI Homo sapiens GI50 n.a. 1766.04 nM PubChem BioAssay data set
NPT457 Cell line BT-549 Homo sapiens GI50 n.a. 3258.37 nM PubChem BioAssay data set
NPT147 Cell line SK-MEL-2 Homo sapiens GI50 n.a. 1914.26 nM PubChem BioAssay data set
NPT391 Cell line HCC 2998 Homo sapiens GI50 n.a. 1603.25 nM PubChem BioAssay data set
NPT81 Cell line A549 Homo sapiens GI50 n.a. 2172.7 nM PubChem BioAssay data set
NPT392 Cell line SNB-75 Homo sapiens GI50 n.a. 1798.87 nM PubChem BioAssay data set
NPT393 Cell line HCT-116 Homo sapiens GI50 n.a. 1000.0 nM PubChem BioAssay data set
NPT148 Cell line HCT-15 Homo sapiens GI50 n.a. 1967.89 nM PubChem BioAssay data set
NPT395 Cell line SF-268 Homo sapiens GI50 n.a. 2333.46 nM PubChem BioAssay data set
NPT83 Cell line MCF7 Homo sapiens GI50 n.a. 2673.01 nM PubChem BioAssay data set
NPT306 Cell line PC-3 Homo sapiens GI50 n.a. 2517.68 nM PubChem BioAssay data set
NPT146 Cell line SK-OV-3 Homo sapiens GI50 n.a. 1986.09 nM PubChem BioAssay data set
NPT397 Cell line NCI-H460 Homo sapiens GI50 n.a. 1442.12 nM PubChem BioAssay data set
NPT396 Cell line T47D Homo sapiens GI50 n.a. 2065.38 nM PubChem BioAssay data set
NPT398 Cell line UACC-62 Homo sapiens GI50 n.a. 1603.25 nM PubChem BioAssay data set
NPT308 Cell line CAKI-1 Homo sapiens GI50 n.a. 2317.39 nM PubChem BioAssay data set
NPT399 Cell line SF-295 Homo sapiens GI50 n.a. 2779.71 nM PubChem BioAssay data set
NPT400 Cell line MDA-MB-435 Homo sapiens GI50 n.a. 2387.81 nM PubChem BioAssay data set
NPT458 Cell line IGROV-1 Homo sapiens GI50 n.a. 1625.55 nM PubChem BioAssay data set
NPT401 Cell line 786-0 Homo sapiens GI50 n.a. 2103.78 nM PubChem BioAssay data set
NPT402 Cell line Hs-578T Homo sapiens GI50 n.a. 2296.15 nM PubChem BioAssay data set
NPT403 Cell line UACC-257 Homo sapiens GI50 n.a. 2306.75 nM PubChem BioAssay data set
NPT404 Cell line CCRF-CEM Homo sapiens GI50 n.a. 1448.77 nM PubChem BioAssay data set
NPT139 Cell line HT-29 Homo sapiens GI50 n.a. 1288.25 nM PubChem BioAssay data set
NPT170 Cell line SK-MEL-28 Homo sapiens GI50 n.a. 2382.32 nM PubChem BioAssay data set
NPT407 Cell line COLO 205 Homo sapiens GI50 n.a. 1462.18 nM PubChem BioAssay data set
NPT839 Cell line L6 Rattus norvegicus IC50 = 1190.0 nM PMID[24721829]
NPT171 Cell line MRC5 Homo sapiens IC50 = 8352.0 nM PMID[25747499]
NPT65 Cell line HepG2 Homo sapiens IC50 = 730.0 nM PMID[25747499]
NPT81 Cell line A549 Homo sapiens IC50 = 1210.0 nM PMID[25747499]
NPT65 Cell line HepG2 Homo sapiens Ratio IC50 = 11.41 n.a. PMID[25747499]
NPT793 Cell line MOLT-3 Homo sapiens Ratio IC50 = 11.41 n.a. PMID[25747499]
NPT81 Cell line A549 Homo sapiens Ratio IC50 = 6.93 n.a. PMID[25747499]
NPT793 Cell line MOLT-3 Homo sapiens IC50 = 730.0 nM PMID[34710743]
NPT65 Cell line HepG2 Homo sapiens IC50 = 730.0 nM PMID[34710743]
NPT81 Cell line A549 Homo sapiens IC50 = 1210.0 nM PMID[34710743]
NPT6 Organism Plasmodium falciparum Plasmodium falciparum IC50 = 410.0 nM PMID[25747499]
NPT6 Organism Plasmodium falciparum Plasmodium falciparum IC50 = 462.8 nM PMID[25747499]
NPT6 Organism Plasmodium falciparum Plasmodium falciparum IC50 = 780.0 nM PMID[34710743]
NPT25412 Cell line HuCC-A1 Homo sapiens IC50 = 1810.0 nM PMID[34710743]
NPT20529 Non-molecular NON-PROTEIN TARGET n.a. IC50 = 1810.0 nM PMID[25747499]
NPT20529 Non-molecular NON-PROTEIN TARGET n.a. IC50 = 730.0 nM PMID[25747499]
NPT757 Organism Plasmodium falciparum 3D7 Plasmodium falciparum 3D7 IC50 = 585.0 nM PMID[25747499]
NPT485 Organism Plasmodium falciparum (isolate K1 / Thailand) Plasmodium falciparum K1 IC50 = 780.0 nM PMID[24721829]
NPT2 Others Unspecified n.a. Ratio IC50 = 1.5 n.a. PMID[24721829]
NPT485 Organism Plasmodium falciparum (isolate K1 / Thailand) Plasmodium falciparum K1 IC50 = 778.6 nM PMID[25747499]
NPT2 Others Unspecified n.a. Ratio IC50 = 10.72 n.a. PMID[25747499]
NPT2 Others Unspecified n.a. Ratio IC50 = 14.27 n.a. PMID[25747499]
NPT2 Others Unspecified n.a. Ratio IC50 = 20.37 n.a. PMID[25747499]
NPT2 Others Unspecified n.a. Ratio IC50 = 18.04 n.a. PMID[25747499]
NPT2 Others Unspecified n.a. Ratio IC50 = 4.62 n.a. PMID[25747499]

In vivo activity

Target ID Target Type Target Name Target Organism Activity Type Activity Relation Value Unit Reference





 Experimental ADME

Experiment Model Experiment Tissue ADME Type ADME Relation ADME Value ADME Unit Reference





 Experimental Toxicity

Quantitative toxicity

Experiment Model Experiment Organism Toxicity Type Toxicity Relation Toxicity Value Toxicity Unit Reference

Common Abbreviations:
LC: Lethal Concentration; LD: Lethal Dose; LT:Lethal Time; NOAEL: No-observed-adverse-effect Level; BMDL: Benchmark Dose Lower Confidence Limit; BMD: Benchmark Dose; BMC:Benchmark Concentration; LOAEL: Lowest Observed Adverse Effect Level; RfD:Reference Dose; RfC:Reference Concentration; MRL: Minimal Risk Level; MEG: Maximum Exposure Guideline; PAC: Protective Action Criteria

Categorical toxicity labels

Hepatotoxicity Carcinogenicity Mutagenicity Cardiotoxicity Respiratory Toxicity Eye Irritation Endocrine Disruption
Hepatotoxicity Carcinogenicity Mutagenicity Cardiotoxicity Respiratory Toxicity Eye Irritation Endocrine Disruption

Note for Reference:
In addition to directly collecting NP quantitative data from primary literature (where reference will provided as NCBI PMID or DOI links), NPASS also integrated NP toxicity records from domain-specific databases. These databases include:
ToxValDB: a curated database that compiles quantitative toxicity values for chemicals from diverse public sources to support toxicological research and risk assessment.
TOXRIC: a comprehensive, free-to-access, online database providing toxicological/feature data. The toxicity labels are retrieved from this database. [PMID: 36400569]


  Chemically structural similarity

Similar Active Natural Products in NPASS

Top-200 similar NPs were calculated against the active-NP-set (includes approximately 50,000 NPs with experimentally-derived bioactivity available in NPASS)

Similarity is measured using the Tanimoto coefficient (Tc) , which compares the binary fingerprints of two molecules. Tc is calculated as the intersection divided by the union of '1' bits in the fingerprints, ranging from 0 to 1, with 1 indicating highest similarity.

●  The left chart: Distribution of similarity level between NPC187036 and all remaining natural products in the NPASS database.
●  The right table: Most similar natural products (Tc>=0.5 or Top200).

Similarity Score Similarity Level Natural Product ID
NPC

Similar Clinical/Approved Drugs

Similarity level is defined by Tanimoto coefficient (Tc) between two molecules.

●  The left chart: Distribution of similarity level between NPC187036 and all drugs/candidates.
●  The right table: Most similar clinical/approved drugs (Tc>=0.5 or Top200).

Similarity Score Similarity Level Drug ID Developmental Stage
NPD

Bioactivity similarity

  Bioactivity similarity

Similar Natural Products in NPASS

Similarity level is defined by Bioactivity similarity was calculated based on bioactivity descriptors of compounds. The bioactivity descriptors were calculated by a recently developed AI algorithm Chemical Checker (CC) [Nature Biotechnology, 38:1087–1096, 2020; Nature Communications, 12:3932, 2021], which evaluated bioactivity similarities at five levels:
A: chemistry similarity;
B: biological targets similarity;
C: networks similarity;
D: cell-based bioactivity similarity;
E: similarity based on clinical data.
Those 5 categories of CC bioactivity descriptors were calculated and then subjected to manifold projection using UMAP algorithm, to project all NPs on a 2-Dimensional space. The current NP was highlighted with a small circle in the 2-D map. Below figures: left-to-right, A-to-E.

A: chemistry similarity
B: biological targets similarity
C: networks similarity
D: cell-based bioactivity similarity
E: similarity based on clinical data