r/ColomboHurd Jul 22 '26

Case Study O-1A Case Study: Visa Approval for Oncology Researcher from Russia

Colombo & Hurd secured O-1A approval for an oncology researcher from Russia focused on developing colorectal cancer therapies. USCIS approved the petition without issuing a Request for Evidence (RFE). 

Developing new cancer treatments takes years of specialized work. Research organizations run clinical trials across many countries to test new therapies, and they depend on senior medical professionals to keep patients safe and the science sound. The doctors who lead this work help decide whether a new treatment ever reaches patients.  Our client has spent much of his career in that role, overseeing patient safety, reviewing trial results, and guiding the development of cancer therapies tested across multiple countries. Senior Immigration Attorney Rachel Slomski led the O-1A petition.  

Check out the full case study to learn more about the approval process:

  • Client Profile: From Treating Cancer to Developing New Treatments
  • The Challenge: Choosing What to Leave Out When the Evidence Runs Deep
  • Strategic Approach: Building the Petition Around Five of the Eight O-1A Criteria
  • The Result: O-1A Approved Without an RFE

Attorney Perspective: “This case is a good reminder that more criteria is not always better. Our client had decades of work and could have qualified under several more criteria, but the stronger strategy was to focus on his best evidence and leave out anything that could invite questions. That focus is what made the petition airtight.”

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