|Rat Target Sites||Mouse Target Sites||TD50 (mg/kg/day)|
|no positive||lun||liv thy||liv||702||86.3m,P|
Key to the Table Above
The Carcinogenic Potency Database (CPDB) is a unique and widely used international resource of the results of 6540 chronic, long-term animal cancer tests on 1547 chemicals. The CPDB provides easy access to the bioassay literature, with qualitative and quantitative analyses of both positive and negative experiments that have been published over the past 50 years in the general literature through 2001 and by the National Cancer Institute/National Toxicology Program through 2004. The CPDB standardizes the diverse literature of cancer bioassays that vary widely in protocol, histopathological examination and nomenclature, and in the published author’s choices of what information to provide in their papers. Results are reported in the CPDB for tests in rats, mice, hamsters, dogs, and nonhuman primates.
For each experiment, information is included on species, strain, and sex of test animal; features of experimental protocol such as route of administration, duration of dosing, dose level(s) in mg/kg body weight/day, and duration of experiment; experimental results are provided on target organ, tumor type, and tumor incidence; carcinogenic potency (TD50) and its statistical significance; shape of the dose-response, author’s opinion as to carcinogenicity, and literature citation.
Only tests with dosing for at least ¼ the standard lifespan of the species and experiment length at least ½ the lifespan are included in the CPDB. Only routes of administration with whole body exposure are included. Doses are standardized, average dose rates in mg/kg/day. A description of methods used in the CPDB to standardize the diverse literature of animal cancer tests is presented for: 1) Criteria for inclusion of experiments 2) Standardization of average daily dose levels and 3) TD50 estimation for a standard lifespan. See Methods for other details.
TD50 provides a standardized quantitative measure that can be used for comparisons and analyses of many issues in carcinogenesis. The range of TD50 values across chemicals that are rodent carcinogens is more than 100 million-fold. More than half the chemicals tested are positive in at least one experiment.
A plot of all results on each experiment in the CPDB for this chemical is presented below. These results are the source information for the Cancer Test Summary table above.
Chemical (Synonym) CAS # Species Sex Strain Route Xpo+Xpt PaperNum 0 Dose 1 Dose 2 Dose 3 Dose Literature Reference or NCI/NTP:Site Path Site Path Notes TD50 DR Pval AuOp LoConf UpConf Cntrl 1 Inc 2 Inc 3 Inc Brkly Code
HC BLUE NO. 1 2784-94-3 808 M f b6c eat 24m24 TR271 : 0 379.mg 765.mg liv MXA 179.mg * P<.0005 129.mg 274.mg 3/50 33/50 47/50 liv:hpa,hpc. S liv hpc 208.mg * P<.0005 c 150.mg 304.mg 1/50 24/50 47/50 liv hpa 697.mg \ P<.004 314.mg 4.97gm 2/50 11/50 (4/50) S TBA MXB 373.mg * P<.002 199.mg 1.72gm 29/50 35/50 47/50 liv MXB 179.mg * P<.0005 129.mg 274.mg 3/50 33/50 47/50 liv:hpa,hpc,nnd. lun MXB no dre P=1. 2.59gm n.s.s. 4/50 2/50 2/50 lun:a/a,a/c. 809 M f b6c eat 9m23 1860m 0 151.mg Burnett;fctx,25,703-707;1987/pers.comm. liv mix er 41.3mg P<.0005 + 19.7mg 91.7mg 3/38 20/22 liv hpc er 114.mg P<.0005 + 56.4mg 302.mg 2/38 13/22 liv hpa er 165.mg P<.0005 77.2mg 499.mg 1/38 10/22 810 M f b6c eat 15m23 1860n 0 252.mg liv mix er 81.5mg P<.0005 + 41.2mg 177.mg 3/38 20/23 liv hpc er 94.0mg P<.0005 + 48.9mg 201.mg 2/38 19/23 liv hpa er 969.mg P<.05 300.mg n.s.s. 1/38 4/23 811 M f b6c eat 91w91 1860o 0 195.mg liv mix ekr 85.0mg P<.0005 + 33.8mg 291.mg 0/10 7/10 liv hpc ekr 148.mg P<.004 + 54.2mg 1.03gm 0/10 5/10 liv hpa ekr 287.mg P<.04 85.8mg n.s.s. 0/10 3/10 812 M f b6c eat 23m23 1860r 0 195.mg liv mix er 51.4mg P<.0005 + 28.5mg 95.5mg 3/38 33/36 liv hpc er 163.mg P<.0005 + 91.4mg 358.mg 2/38 20/36 liv hpa er 185.mg P<.0005 103.mg 402.mg 1/38 18/36 813 M f b6c eat 91w91 1860s 0 390.mg liv hpc ekr noTD50 P<.0005 + n.s.s. 162.mg 0/10 10/10 liv mix ekr noTD50 P<.0005 + n.s.s. 162.mg 0/10 10/10 liv hpa ekr 574.mg P<.04 172.mg n.s.s. 0/10 3/10 814 M f b6c eat 23m23 1860u 0 390.mg liv mix er noTD50 P<.0005 + n.s.s. 106.mg 3/38 36/36 liv hpc er 87.1mg P<.0005 + 45.8mg 163.mg 2/38 34/36 liv hpa er 1.30gm P<.02 515.mg n.s.s. 1/38 7/36 815 M m b6c eat 24m24 TR271 : 0 176.mg 355.mg liv MXA 259.mg * P<.002 142.mg 1.13gm 15/50 31/50 37/50 liv:hpa,hpc. S liv hpa 286.mg \ P<.008 133.mg 6.59gm 4/50 17/50 (10/50) S MXB MXB 369.mg * P<.002 202.mg 1.61gm 11/50 20/50 31/50 liv:hpc; thy:fca. C liv hpc 389.mg * P<.002 c 210.mg 1.95gm 11/50 20/50 30/50 thy fca 2.23gm * P<.008 c 846.mg 39.1gm 0/50 0/50 5/50 TBA MXB 561.mg * P<.3 165.mg n.s.s. 36/50 44/50 43/50 liv MXB 259.mg * P<.002 142.mg 1.13gm 15/50 31/50 37/50 liv:hpa,hpc,nnd. lun MXB no dre P=1. 1.12gm n.s.s. 5/50 6/50 3/50 lun:a/a,a/c. 816 R f f34 eat 24m24 TR271 : 0 72.9mg 148.mg ute esp 429.mg * P<.05 185.mg n.s.s. 5/50 9/50 14/50 S lun MXA 702.mg * P<.03 p 299.mg n.s.s. 1/50 3/50 7/50 lun:a/a,a/c. lun a/c 1.19gm * P<.02 p 453.mg n.s.s. 0/50 1/50 4/50 TBA MXB no dre P=1. 108.mg n.s.s. 45/50 43/50 45/50 liv MXB 3.31gm * P<.3 809.mg n.s.s. 0/50 1/50 1/50 liv:hpa,hpc,nnd. 817 R m f34 eat 24m24 TR271 : 0 58.3mg 118.mg liv MXA 938.mg * P<.06 e 334.mg n.s.s. 1/50 0/50 6/50 liv:hpc,nnd. liv nnd 1.66gm * P<.05 499.mg n.s.s. 0/50 0/50 3/50 S TBA MXB no dre P=1. 117.mg n.s.s. 41/50 41/50 37/50 liv MXB 938.mg * P<.06 334.mg n.s.s. 1/50 0/50 6/50 liv:hpa,hpc,nnd.
See full CPDB Summary Table on 1547 chemicals. See Full CPDB for all results on 6540 experiments of 1547 chemicals.
A complete list of CPDB chemicals, which is searchable by name or by CAS number, is available here.
For a compendium of CPDB results organized by target organ, which lists all chemicals in each species that induced tumors in each of 35 organs, see Summary Table by Target Organ.
The CPDB is available in several formats that permit printing and downloading into spreadsheets and statistical databases.
A Supplementary Dataset gives details on dosing and survival for each experiment.
Relatively precise estimates of the lower confidence limit on the TD10 (LTD10) are readily calculated from the TD50 and its lower confidence limit, which are reported in the CPDB. For researchers and regulatory agencies interested in LTD10 values, we provide them in an Excel spreadsheet.
PDF versions of our publications of analyses using the CPDB are available, organized by year and by research topic.