MK-7075 (Miransertib) in Proteus Syndrome

Summary

Background: Proteus syndrome is a rare overgrowth disorder. Most people begin to have symptoms between 6 months and 2 years of age. There are very few living adults with this disease. There is also no known treatment for it. Researchers want to see if a new drug can slow down or stop overgrowth in people with Proteus syndrome. Objective: To learn if miransertib is a safe and effective treatment for Proteus syndrome. Eligibility: People ages 3 and older with Proteus syndrome. Design: Participants will be screened with a medical checkup. They will answer questions about their medical history and current health. They will have a physical exam with vital signs. They will have an electrocardiogram to measure their heartbeat. They will give blood and urine samples. They will repeat the screening tests during the study. Participants will take a miransertib pill once a day. They will bring their empty pill bottles with them to the NIH when they visit. If they can t swallow a pill, researchers will try to find other ways for them to take the drug. Participants will have X-rays, ultrasounds, and imaging scans. Photos may be taken of their feet and other parts of the body that have or develop signs of Proteus syndrome. Participants will have lung function tests to measure how much and how fast air moves out of their lungs. Participants will complete surveys about their levels of pain, physical functioning, and quality of life. Participants may have additional tests performed to assess their individual disease. They may have consultations with other specialists. Participation lasts about 4 years with possibility of continued treatment beyond 4 years....

Timeline

Start

2022-05-20

Primary completion

2026-06-25

Completion

2028-07-01

Publications

• Background Lindhurst MJ, Yourick MR, Yu Y, Savage RE, Ferrari D, Biesecker LG. Repression of AKT signaling by ARQ 092 in cells and tissues from patients with Proteus syndrome. Sci Rep. 2015 Dec 11;5:17162. doi: 10.1038/srep17162.
• Background Keppler-Noreuil KM, Sapp JC, Lindhurst MJ, Darling TN, Burton-Akright J, Bagheri M, Dombi E, Gruber A, Jarosinski PF, Martin S, Nathan N, Paul SM, Savage RE, Wolters PL, Schwartz B, Widemann BC, Biesecker LG. Pharmacodynamic Study of Miransertib in Individuals with Proteus Syndrome. Am J Hum Genet. 2019 Mar 7;104(3):484-491. doi: 10.1016/j.ajhg.2019.01.015. Epub 2019 Feb 22.
• Background Nathan NR, Patel R, Crenshaw MM, Lindhurst MJ, Olsen C, Biesecker LG, Keppler-Noreuil KM, Darling TN. Pathogenetic insights from quantification of the cerebriform connective tissue nevus in Proteus syndrome. J Am Acad Dermatol. 2018 Apr;78(4):725-732. doi: 10.1016/j.jaad.2017.10.018. Epub 2017 Oct 16.
• Khan RMN, Arisa OT, Zeng Y, Rostagni O, Redick C, Paris KM, Biesecker LG, Ours CA, Figg WD. Development and validation of an LC-MS/MS assay for the quantification of Miransertib in human plasma and clinical application. J Chromatogr B Analyt Technol Biomed Life Sci. 2026 May 29;1281:125161. doi: 10.1016/j.jchromb.2026.125161. Online ahead of print.

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