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| __NOTOC__
| | #REDIRECT [[Colesevelam#Nonclinical Toxicology]] |
| {{Colesevelam}}
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| {{CMG}}; {{AE}} {{SS}}
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| ==Nonclinical Toxicology==
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| ===Carcinogenesis, Mutagenesis, Impairment of Fertility===
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| '''Carcinogenesis''': A 104-week carcinogenicity study with colesevelam hydrochloride was conducted in CD-1 mice, at oral dietary doses up to 3 g/kg/day. This dose was approximately 50 times the maximum recommended human dose of 4.5 g/day, based on body weight, mg/kg. There were no significant drug-induced tumor findings in male or female mice. In a 104-week carcinogenicity study with colesevelam hydrochloride in Harlan Sprague-Dawley rats, a statistically significant increase in the incidence of pancreatic acinar cell adenoma was seen in male rats at doses >1.2 g/kg/day (approximately 20 times the maximum human dose, based on body weight, mg/kg) (trend test only). A statistically significant increase in thyroid C-cell adenoma was seen in female rats at 2.4 g/kg/day (approximately 40 times the maximum human dose, based on body weight, mg/kg).
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| '''Mutagenesis: Colesevelam hydrochloride and 4 degradants present in the drug substance have been evaluated for mutagenicity in the Ames test and a mammalian chromosomal aberration test. The 4 degradants and an extract of the parent compound did not exhibit genetic toxicity in an in vitro bacterial mutagenesis assay in S.typhimurium and E. coli (Ames assay) with or without rat liver metabolic activation. An extract of the parent compound was positive in the Chinese Hamster Ovary (CHO) cell chromosomal aberration assay in the presence of metabolic activation and negative in the absence of metabolic activation. The results of the CHO cell chromosomal aberration assay with 2 of the 4 degradants, decylamine HCl and aminohexyltrimethyl ammonium chloride HCl, were equivocal in the absence of metabolic activation and negative in the presence of metabolic activation. The other 2 degradants, didecylamine HCl and 6-decylamino-hexyltrimethyl ammonium chloride HCl, were negative in the presence and absence of metabolic activation.
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| Impairment of Fertility: Colesevelam hydrochloride did not impair fertility in rats at doses up to 3 g/kg/day (approximately 50 times the maximum human dose, based on body weight, mg/kg).
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| ===Animal Toxicology and/or Pharmacology===
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| Reproductive Toxicology Studies
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| Reproduction studies have been performed in rats and rabbits at doses up to 3 g/kg/day and 1 g/kg/day, respectively (approximately 50 and 17 times the maximum human dose, based on body weight, mg/kg) and have revealed no evidence of harm to the fetus due to colesevelam hydrochloride.<ref name="dailymed.nlm.nih.gov">{{Cite web | last = | first = | title = WELCHOL (COLESEVELAM HYDROCHLORIDE) TABLET, FILM COATED WELCHOL (COLESEVELAM HYDROCHLORIDE) FOR SUSPENSION [DAIICHI SANKYO, INC.] | url = http://dailymed.nlm.nih.gov/dailymed/lookup.cfm?setid=4a06d3b2-7229-4398-baba-5d0a72f63821 | publisher = | date = | accessdate = 10 February 2014 }}</ref>
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| ==References==
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| {{Reflist|2}}
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| {{Lipid modifying agents}}
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| [[Category:Hepatology]]
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| [[Category:Bile acid sequestrants]]
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| [[Category:Cardiovasuclar Drugs]]
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| [[Category:Drugs]]
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