Is there a database for pre-clinical studies? (such as https://clinicaltrials.gov/ which is a database of privately and publicly funded clinical studies conducted around the world)
No, in my knowledge, any such database doesn't exist. You need to go on individual websites of various regulatory agencies and review the database for finding preclinical data of the drugs of your interest. Providing few links below:
1. US FDA: https://www.accessdata.fda.gov/scripts/cder/daf/
2. Europe EMA: http://www.ema.europa.eu/ema/index.jsp?curl=pages/includes/medicines/medicines_landing_page.jsp
3. Health Canada: https://hpr-rps.hres.ca/reg-content/summary-basis-decision.php
4. Australia TGA: https://www.tga.gov.au/ws-auspar-index
I know this would be a delayed response, but I just now came across this question. And if you haven't came across with any of the better solutions yet, this could potentially assist you.
Firstly, I suggest you rather than looking for some specific pre-clinical studies database, I would recommend you to go with MEDLINE, NLM, NIH, NCBI etc. As these all databases has separate entity for pre-clinical studies (animal studies), you can just do this by adding filter to your search.
Secondly, yes! There exists a registry for pre-clinical studies which comprises of protocols. (www.preclinicaltrials.eu)
Finally, as far as my knowledge concerned, GOSTAR doesn't deal with pre-clinical stuff. (As one of the researchers mentioned about it)
I hope, I have answered your question and assumes this could aid you.
We have developed an electronic cloud-based database - tailored for the needs of preclinical (animal) studies. Paper: https://academic.oup.com/database/article/doi/10.1093/database/bay124/5255128. Database file: https://ninoxdb.de/de/templates/research.
The Animal Study Registry: https://www.animalstudyregistry.org/
Other platforms exist to preregister, however, they are not tailored to animal studies such as the Open Science Framework, or Aspredicted.
Being the Daily Director of Preclinicaltrials.eu, I highly encourage you all to preregister your animal studies! If you need help with preregistration, please do not hesitate to contact me, I would be glad to help you further!