According to the website (
Interviews | UCSF Medical Scientist Training Program), there are two more upcoming interviews for MSTP: 1/19-1/20 and 1/28-1/29 (Day 1 for MD, Day 2 for MSTP-specific interview). Since MSTP admissions run separately, they might not give pre-II R just like what MD-only admissions does.
My friend did MSTP interview on Oct and checked both the MSTP and MD-only on her app. Since MSTP interview encompasses MD, people might get into MD before MSTP decision comes out in early March. I am not sure how UCSF deals with applicants who didn't make it into MSTP II but are qualified for MD-only II.