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SK-NEP-1: Human Ewing Sarcoma Cell Line



SK-NEP-1 was originally described as an anaplastic Wilms-tumor/renal-cancer cell line. It has, however, been reclassified as a cell line belonging to the Ewing sarcoma family of tumors, since these cells harbor the oncogenic EWS-FLI1 chromosomal rearrangement. These cells express mutant p53 and are known to form tumors in immunocompromised mice.


This cell line was established in 1971 from a metastatic site (pleural effusion) in a 25-year-old Caucasian female.


  • Germain Trempe, formerly at Sloan Kettering Institute, Memorial Sloan Kettering
  • Jorgen Fogh, PhD, formerly at Sloan Kettering Institute, Memorial Sloan Kettering

Key References

  • Fogh J et al. (1977) One hundred and twenty-seven cultured human tumor cell lines producing tumors in nude mice. Journal of the National Cancer Institute 59: 221-226 (PubMed ID: 327080)
  • Smith MA et al. (2008) SK-NEP-1 and Rh1 are Ewing family tumor lines. Pediatric Blood & Cancer 50: 703-706 (PubMed ID: 17154184)

Licensing Information

This cell line may be licensed nonexclusively for research or commercial purposes.

Contact Information

  • For licensing requests: Alexandra Buga, MBA, Business Development Analyst, Office of Technology Development, MSK, 646-888-1078,
  • For non-licensing requests from academic-research institutions: Frances Weis-Garcia, PhD, Associate Laboratory Member/Head, Antibody & Bioresource Core Facility, MSK, 646-888-2354,

Stage of Development

Ready to use