Mitotane

Mitotane, sold under the brand name Lysodren, is a steroidogenesis inhibitor and cytostatic antineoplastic medication which is used in the treatment of adrenocortical carcinoma and Cushing's syndrome.[1][2][3][4] It is a derivative of the early insecticide DDT and an isomer of p,p'-DDD, and is also known as 1,1-(dichlorodiphenyl)-2,2-dichloroethane (o,p'-DDD).[5]

Mitotane
Clinical data
Trade namesLysodren
Other names1,1-(Dichlorodiphenyl)-2,2-dichloroethane; o,p'-DDD
AHFS/Drugs.comMonograph
MedlinePlusa608050
License data
Pregnancy
category
  • C
Routes of
administration		Oral
ATC code
Legal status
Legal status
  • In general: ℞ (Prescription only)
Pharmacokinetic data
Bioavailability40%
Protein binding6%
Elimination half-life18 to 159 days
Identifiers
CAS Number
PubChem CID
IUPHAR/BPS
DrugBank
ChemSpider
UNII
KEGG
ChEMBL
CompTox Dashboard (EPA)
ECHA InfoCard100.000.152
Chemical and physical data
FormulaC14H10Cl4
Molar mass320.04 g/mol g·mol−1
3D model (JSmol)
ChiralityRacemic mixture
Melting point76 to 78 °C (169 to 172 °F)
  (verify)

Medical uses

Mitotane has been produced by Bristol Myers Squibb SpA but it is marketed as an orphan drug for adrenocortical carcinoma due to the small number of patients in need of it. Its main use is in those patients who have persistent disease despite surgical resection, those who are not surgical candidates, or those who have metastatic disease. A 2007 study of 177 patients shows a significant increase in the recurrence-free interval after radical surgery followed by mitotane when compared to surgery alone [edit: this sentence is misleading in that it does not indicate that the study cited was derived from retrospective data (1985-2005) across different health systems with varying standards of care.[6] ].[6] The drug is also sometimes used in the treatment of Cushing's syndrome.[3]

Side effects

The use of mitotane is unfortunately limited by side effects,[7] which, as reported by Schteinberg et al., include anorexia and nausea (88%), diarrhea (38%), vomiting (23%), decreased memory and ability to concentrate (50%), rash (23%), gynecomastia (50%), arthralgia (19%), and leukopenia (7%).[8]

Pharmacology

Mitotane is an inhibitor of the adrenal cortex. It acts as an inhibitor of cholesterol side-chain cleavage enzyme (P450scc, CYP11A1), and also of 11β-hydroxylase (CYP11B1), 18-hydroxylase (aldosterone synthase, CYP11B2), and 3β-hydroxysteroid dehydrogenase (3β-HSD) to a lesser extent.[1][7] In addition, mitotane has direct and selective cytotoxic effects on the adrenal cortex, via an unknown mechanism, and thereby induces permanent adrenal atrophy similarly to DDD.[9][10]

Chemistry

Analogues of mitotane include aminoglutethimide, amphenone B, and metyrapone.

History

Mitotane was introduced in 1960 for the treatment of adrenocortical carcinoma.[3]

Society and culture

Generic names

Mitotane is the generic name of the drug and its INN, USAN, BAN, and JAN.[4][11]

Veterinary use

Mitotane is also used to treat Cushing's disease (pituitary-dependent Cushing's syndrome) in dogs. The medication is used in the controlled destruction of adrenal tissue, leading to a decrease in cortisol production.[12]

References
  1. J. Larry Jameson; Leslie J. De Groot (18 May 2010). Endocrinology - E-Book: Adult and Pediatric. Elsevier Health Sciences. pp. 1888–. ISBN 978-1-4557-1126-0.
  2. Hahner S, Fassnacht M (April 2005). "Mitotane for adrenocortical carcinoma treatment". Current Opinion in Investigational Drugs. 6 (4): 386–94. PMID 15898346.
  3. Marcello D. Bronstein (1 October 2010). Cushing's Syndrome: Pathophysiology, Diagnosis and Treatment. Springer Science & Business Media. pp. 156–. ISBN 978-1-60327-449-4.
  4. J. Elks (14 November 2014). The Dictionary of Drugs: Chemical Data: Chemical Data, Structures and Bibliographies. Springer. pp. 382–. ISBN 978-1-4757-2085-3.
  5. Information from PubChem
  6. Terzolo M, Angeli A, Fassnacht M, Daffara F, Tauchmanova L, Conton PA, Rossetto R, Buci L, Sperone P, Grossrubatscher E, Reimondo G, Bollito E, Papotti M, Saeger W, Hahner S, Koschker AC, Arvat E, Ambrosi B, Loli P, Lombardi G, Mannelli M, Bruzzi P, Mantero F, Allolio B, Dogliotti L, Berruti A (2007). "Adjuvant mitotane treatment for adrenocortical carcinoma". N Engl J Med. 356 (23): 2372–2380. doi:10.1056/NEJMoa063360. hdl:2318/37317. PMID 17554118.
  7. Philip E. Harris; Pierre-Marc G. Bouloux (24 March 2014). Endocrinology in Clinical Practice, Second Edition. CRC Press. pp. 216–. ISBN 978-1-84184-951-5.
  8. Schteinberg DE, Motazedi A, NoonanRA, Thompson NW (1982). "Treatment of Adrenal Carcinomas". Arch. Surg. 117 (9): 1142–1149. doi:10.1001/archsurg.1982.01380330010004. PMID 7115060.
  9. Eudocia Quant Lee, MD, MPH; David Schiff, MD; Patrick Y. Wen, MD (28 September 2011). Neurologic Complications of Cancer Therapy. Demos Medical Publishing. pp. 179–. ISBN 978-1-61705-019-0.CS1 maint: multiple names: authors list (link)
  10. C.R. Kannan (6 December 2012). The Adrenal Gland. Springer Science & Business Media. pp. 160–. ISBN 978-1-4613-1001-3.
  11. Index Nominum 2000: International Drug Directory. Taylor & Francis. 2000. pp. 697–. ISBN 978-3-88763-075-1.
  12. Canine Cushing’s Syndrome: Diagnosis and Treatment Archived 2007-10-21 at the Wayback Machine
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