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AP1081

Development stage: Unknown
Lead developer: Halozyme
Modality: Small Molecules
Administration: Transdermal

Overview

**AP1081** was an investigational fixed-dose transdermal gel developed by Antares Pharma for female contraception. It combined the synthetic estrogen ethinyl estradiol with the progestin norelgestromin. Estrogenic and progestogenic signaling suppresses the hypothalamic-pituitary-gonadal axis, reducing gonadotropin release and inhibiting ovulation. The product was absorbed through the skin and was not identified as a marketed product or assigned an INN. ([go.drugbank.com](https://go.drugbank.com/drugs/DB05233))

Targets

PR (Progesterone receptor)ER (Estrogen receptor)

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