Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Description of key information

Key value for chemical safety assessment

Carcinogenicity: via oral route

Endpoint conclusion
Endpoint conclusion:
no study available

Carcinogenicity: via inhalation route

Endpoint conclusion
Endpoint conclusion:
no study available

Carcinogenicity: via dermal route

Endpoint conclusion
Endpoint conclusion:
no study available

Justification for classification or non-classification

Additional information

Due to the overall conclusion of a negative genotoxic potential for Hydroxyprogesterone a potential for a genotoxic carcinogenicity is not expected. However, it should be kept in mind that sex steroids might stimulate the growth of hormone-dependent tissues and tumors. Regarding TRGS 905 (version 12.03.20202 and the justification for Steroid Hormones, version Sept 1999) OHPA is classified as gestagen (group 7) with carcinogenicity Cat. 2 (CLP), but Hydroxyprogesterone is not listed in the regulation, due to the low pharmacological activity


 


No studies with exogenous Hydroxyprogesterone were conducted to assess the carcinogenicity potential. Observational studies suggesting some degree of association between higher serum 17-hydroxyprogesterone in pregnancy and a woman’s future risk of ovarian cancer exhibit several limitations e.g. only a single time-point of measurement and largely varying lag times in follow-up. Consequently, it was concluded that more data are needed to determine sufficiently whether certain blood hormone levels measured in pregnancy are predictive of future cancer risk (Iqbal, 2019).


 


Therefore, due to



  • the overall negative genotoxicity (in vitro and in vivo)

  • its low gestagenic potency

  • only slight findings at the high dose (1000 mg/kg; slight effects on kidney) in the combined repeated dose and reproductive toxicity study in rats


 


no indication for a carcinogenic potential of Hydroxyprogesterone can be concluded.