Hi! Unfortunately, there is no syllabus for the USMLE Step 1 exam though we all wish there was one.

However, all the subjects that will be tested by the exam are:

• Biochemistry
• Immunology
• Microbiology
• Fundamental pathology and pharmacology
• Cardiovascular system
• Endocrine system
• GI system
• Hematology/Oncology
• Musculoskeletal/Dermatology
• Nervous system
• Psychiatry
• Renal system
• Reproductive system
• Respiratory system

All the high-yield information for USMLE Step 1 are nicely summarized in First Aid, the gold-standard book for studying for USMLE Step 1. Doing UWorld Qbank (~2500 questions) questions to familiarized yourself with Step 1 style questions is also a must!

Hope this helps and best of luck!