|Rat Target Sites||Mouse Target Sites||TD50 (mg/kg/day)|
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
ARAMITE 140-57-8 429 M f b6a orl 80w80 40a 0 157.mg Innes;ntis,1968/1969 lun ade evx 432.mg P<.3 99.0mg n.s.s. 1/17 3/16 liv hpt evx no dre P=1. 305.mg n.s.s. 0/17 0/16 tba mix evx 391.mg P<.4 85.9mg n.s.s. 2/17 4/16 430 M m b6a orl 77w77 40a 0 146.mg liv hpt evx 15.9gm P<1. 166.mg n.s.s. 1/18 1/17 lun ade evx no dre P=1. 281.mg n.s.s. 2/18 0/17 tba mix evx no dre P=1. 145.mg n.s.s. 3/18 2/17 431 M f b6c orl 77w77 40a 0 157.mg liv hpt evx 973.mg P<.3 158.mg n.s.s. 0/16 1/17 lun ade evx 973.mg P<.3 158.mg n.s.s. 0/16 1/17 tba mix evx 92.7mg P<.0005 41.1mg 295.mg 0/16 8/17 432 M m b6c orl 80w80 40a 0 146.mg liv mix evx 126.mg P<.003 50.7mg 617.mg 0/16 6/16 liv hpt evx 158.mg P<.006 + 59.4mg 1.56gm 0/16 5/16 lun mix evx no dre P=1. 285.mg n.s.s. 0/16 0/16 tba mix evx 103.mg P<.002 43.6mg 375.mg 0/16 7/16 433 R b cfn eat 24m24 42 0 4.50mg 9.00mg 18.0mg Popper;canc,13,1035-1046;1960 liv hnd 61.8mg * P<.0005 + 38.4mg 122.mg 5/180 3/93 10/90 22/96 bil ade 1.01gm * P<.05 + 248.mg n.s.s. 0/180 0/93 0/90 2/96 434 R b fds eat 22m24 1133 0 22.5mg 71.1mg 225.mg Oser;txap,2,441-457;1960 liv mix agrs 430.mg * P<.002 + 202.mg 1.99gm 0/22 1/20 2/21 6/20 435 R f osm eat 27m27 21 0 10.0mg Deichmann;txap,11,88-103;1967 liv hem 256.mg P<.3 - 41.7mg n.s.s. 0/30 1/30 tba mix no dre P=1. - 16.1mg n.s.s. 13/30 12/30 436 R f osm eat 24m24 84a 0 4.00mg Radomski;txap,7,652-656;1965 liv tum e no dre P=1. - 24.7mg n.s.s. 1/30 0/30 tba ben e 31.5mg P<.6 - 5.40mg n.s.s. 6/30 8/30 tba mal e no dre P=1. - 13.0mg n.s.s. 6/30 3/30 437 R m osm eat 27m27 21 0 8.00mg Deichmann;txap,11,88-103;1967 liv tum no dre P=1. - 62.6mg n.s.s. 0/30 0/30 tba mal 101.mg P<.1 - 24.7mg n.s.s. 0/30 2/30 tba mix 198.mg P<.6 - 27.2mg n.s.s. 1/30 2/30 438 R m osm eat 24m24 84a 0 3.20mg Radomski;txap,7,652-656;1965 liv tum e no dre P=1. - 19.8mg n.s.s. 0/30 0/30 tba ben e 64.7mg P<.3 - 10.5mg n.s.s. 0/30 1/30 tba mal e no dre P=1. - 10.6mg n.s.s. 3/30 2/30 439 R b sda eat 24m24 42 0 4.50mg 9.00mg 18.0mg Popper;canc,13,1035-1046;1960 liv hnd 760.mg * P<.3 187.mg n.s.s. 0/82 0/46 1/41 1/92 440 R b wid eat 24m24 42 0 4.50mg 9.00mg 18.0mg liv hnd 79.9mg Z P<.0005 + 48.2mg 155.mg 2/193 2/93 3/100 20/90 bil ade 397.mg * P<.002 + 151.mg 1.86gm 0/193 0/93 0/100 5/90 liv hpc h 1.00gm * P<.04 + 246.mg n.s.s. 0/193 0/93 0/100 2/90
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.