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Cancer Res. 1996 Dec 15;56(24):5566-70.

Chemoprevention of mammary carcinoma by LGD1069 (Targretin): an RXR-selective ligand.

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  • 1Department of Endocrine Research, Ligand Pharmaceuticals, Inc., San Diego, California 92121, USA.

Abstract

Recently, 9-cis retinoic acid, a high affinity ligand for retinoic acid receptors and retinoid X-receptors (RXRs), was shown to have efficacy superior to all-trans retinoic acid as a chemopreventive agent in the N-nitroso-N-methylurea-induced rat mammary carcinoma model. To further explore the specific contribution RXR activation may play in suppression of carcinogenesis, the efficacy of LGD1069 (Targretin), an RXR-selective ligand, in the N-nitroso-N-methylurea-induced rat mammary tumor model was studied. LGD1069-treated animals showed a 90% reduction in tumor burden and tumor incidence compared with vehicle-treated rats with an efficacy similar to that achieved with tamoxifen. LGD1069 was very well tolerated during 13 weeks of chronic therapy with no classic signs of "retinoid-associated" toxicities. These data demonstrate that LGD1069, an RXR-selective ligand, can act as a highly effective and benign chemopreventive agent for mammary carcinoma.

PMID:
8971154
[PubMed - indexed for MEDLINE]
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