There isn't one specific job title for a scientist who studies cures for diseases. The field is broad and encompasses many different specialties. Here are some possible titles, depending on their focus:

General:

* Medical Researcher

* Disease Researcher

* Pharmaceutical Researcher

* Biomedical Scientist

Specific:

* Immunologist: Studies the immune system and how it can be used to fight diseases.

* Virologist: Studies viruses and develops treatments for viral diseases.

* Oncologist: Studies cancer and develops cancer treatments.

* Microbiologist: Studies microorganisms and develops treatments for infections.

* Geneticist: Studies genes and genetic diseases and explores potential gene therapies.

* Pharmacologist: Studies the effects of drugs on the body and develops new medications.

The best title would depend on the specific area of disease and the methods they use to study cures.