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Clinical Study

Neurofibromatosis Type 1 and Vitamin D Supplementation

This is a randomized clinical trial of oral vitamin D therapy in adults with NF1 and vitamin D insufficiency. We are looking for about 320 adults with known NF1 to participate in this study. The purpose of this study is to treat adults with two different doses of vitamin D to determine which dose is most appropriate to maintain bone mineral density of the spine and hip.


For more information contact:

Jenny Billy

IRB#: IRB_00055719 | PI: David Viskochil | Department: PEDIATRICS | Approval Date: 2013-11-20 07:00:00
Specialties: Pediatric Genetics

Who can participate?

 Gender: All

 Age: Over 18 years old

 Volunteers: Volunteers with special conditions

 Location: In Person

Inclusion Criteria:

  • Diagnosis of Neurofibromatosis Type 1
  • Ages 25-40 yrs of age
  • Not on Vitamin D or Calcium supplements
  • Wiling to come to clinic 3 times over 2 years

Will I be paid for my time?


Last Updated: 4/5/21