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Selective estrogen receptor degrader - Wikipedia

From Wikipedia, the free encyclopedia

Class of drugs

A selective estrogen receptor degrader or downregulator (SERD) is a type of drug that selectively binds to the estrogen receptor (ER) and induces its degradation, and thus causes its downregulation.[1] SERDs are used in the treatment of estrogen receptor-positive breast cancer, particularly in cases where tumors have developed resistance to other forms of endocrine therapy, such as selective estrogen receptor modulators (SERMs) or aromatase inhibitors.[1]

The mechanism of action of SERDs involves binding to the estrogen receptor, leading to a conformational change that facilitates recruitment of cellular machinery to degrade the receptor protein. By promoting degradation of the estrogen receptor, SERDs effectively inhibit estrogen signaling within cancer cells, thereby suppressing tumor growth.

A common SERD used in clinical practice is fulvestrant. Fulvestrant is administered as an intramuscular injection and is indicated for the treatment of advanced breast cancer in postmenopausal women whose cancer has progressed following anti-estrogen therapy.

As of 2016 the only marketed SERD was fulvestrant (brand name Faslodex).[1] As of November 2016 other SERDs under development include brilanestrant and elacestrant.[2] The clinical success of fulvestrant led to efforts to discover and develop a parallel drug class of selective androgen receptor degraders (SARDs).[2]

Fulvestrant requires intramuscular injections once every two weeks.[3] In response, pharmaceutical companies are currently developing oral SERDs. Among products in development are:[4]

Monofunction (ER ligand) hydrophobic tag degradation:


The oral SERDs target ER-positive/HER2-negative breast cancer and are tested as monotherapy and in combination with other drugs such as the CDK inhibitor palbociclib (Ibrance).[5][6][7]

  1. ^ a b c Lee CI, Goodwin A, Wilcken N (January 2017). "Fulvestrant for hormone-sensitive metastatic breast cancer". The Cochrane Database of Systematic Reviews. 1 (1): CD011093. doi:10.1002/14651858.CD011093.pub2. PMC 6464820. PMID 28043088.
  2. ^ a b Lai AC, Crews CM (February 2017). "Induced protein degradation: an emerging drug discovery paradigm". Nature Reviews. Drug Discovery. 16 (2): 101–114. doi:10.1038/nrd.2016.211. PMC 5684876. PMID 27885283.
  3. ^ "Injection-Site Pain With Large-Volume Intramuscular Injection of Fulvestrant Can Be Minimized". PracticeUpdate. Retrieved 2020-12-28.
  4. ^ "A blockbuster breast cancer niche has Roche and Sanofi in the lead". Evaluate.com. 2020-02-19. Retrieved 2020-12-28.
  5. ^ "Rintodestrant | oral selective estrogen receptor degrader (SERD) | G1 Therapeutics, Inc". www.g1therapeutics.com. Retrieved 2021-01-09.
  6. ^ Nalley C (5 February 2021). "Orally Bioavailable SERD Shows Promise in Certain Breast Cancer Patients". Oncology Times. 43 (3): 35. doi:10.1097/01.COT.0000734348.58210.24.
  7. ^ Bardia A, Linden HM, Ulaner GA, Chandarlapaty S, Gosselin A, Celanovic M, et al. (20 May 2019). "Phase 1/2 dose-escalation and expansion study investigating SAR439859 +/- palbociclib in postmenopausal women with estrogen receptor-positive (ER+)/HER2- metastatic breast cancer". Journal of Clinical Oncology. 37 (15_suppl): TPS1105. doi:10.1200/JCO.2019.37.15_suppl.TPS1105. S2CID 190898194.
Estrogens

and

antiestrogens Estrogens ERTooltip Estrogen receptor agonists Progonadotropins Antiestrogens ERTooltip Estrogen receptor antagonists
(incl. SERMsTooltip selective estrogen receptor modulators/SERDsTooltip selective estrogen receptor downregulators) Aromatase inhibitors Antigonadotropins Others
See also
Estrogen receptor modulators
Androgens and antiandrogens
Progestogens and antiprogestogens
List of estrogens
Estrogen receptor modulators ERTooltip Estrogen receptor Agonists Mixed
(SERMsTooltip Selective estrogen receptor modulators) Antagonists GPERTooltip G protein-coupled estrogen receptor Agonists Antagonists Unknown
See also
Receptor/signaling modulators
Estrogens and antiestrogens
Androgen receptor modulators
Progesterone receptor modulators
List of estrogens

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