PMID- 38443692 OWN - NLM STAT- Publisher LR - 20240305 IS - 1573-7373 (Electronic) IS - 0167-594X (Linking) DP - 2024 Mar 5 TI - Cutaneous toxicities of mitogen-activated protein kinase inhibitors in children and young adults with neurofibromatosis-1. LID - 10.1007/s11060-024-04617-2 [doi] AB - PURPOSE: Neurofibromatosis type 1 (NF1) is an autosomal dominant disorder which commonly causes neoplasms leading to disfigurement or dysfunction. Mitogen-activated protein kinase inhibitors (MEKi) are generally well-tolerated treatments which target neural tumor progression in patients with NF1. However, cutaneous adverse events (CAEs) are common and may hinder patients' abilities to remain on treatment, particularly in children. We aim to characterize CAEs secondary to MEKi treatment in pediatric and young adult patients with NF1. METHODS: We reviewed institutional medical records of patients under 30 years with a diagnosis of "NF1," "NF2," or "other neurofibromatoses" on MEKi therapy between January 1, 2019 and June 1, 2022. We recorded the time-to-onset, type, and distribution of CAEs, non-cutaneous adverse events (AEs), AE management, and tumor response. RESULTS: Our cohort consisted of 40 patients with NF1 (median age, 14 years). Tumor types included low-grade gliomas (51%) and plexiform neurofibromas (38%). MEKi used included selumetinib (69%), trametinib (25%), and mirdametinib (6%). A total of 74 CAEs occurred, with 28 cases of acneiform rash (38%). Other common CAEs were paronychia, seborrheic dermatitis, eczema, xerosis, and oral mucositis. The most common treatments included oral antibiotics and topical corticosteroids. Most patients had clinical (stable or improved) tumor response (71%) while 29% had tumor progression while on a MEKi. There was no significant association between CAE presence and tumor response (p = 0.39). CONCLUSIONS: Improvement in characterization of MEKi toxicities and their management is important to develop treatment guidelines for pediatric and young adult patients with NF1 on MEKi therapy. CI - (c) 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature. FAU - Peacock, Brianna C AU - Peacock BC AUID- ORCID: 0000-0003-1865-9105 AD - Texas A&M University School of Engineering Medicine, Houston, TX, USA. FAU - Tripathy, Sanjna AU - Tripathy S AUID- ORCID: 0000-0002-9728-1042 AD - McGovern Medical School, The University of Texas Health Sciences Center, Houston, TX, USA. FAU - Hanania, Hannah L AU - Hanania HL AUID- ORCID: 0000-0002-6155-2226 AD - Baylor College of Medicine, Houston, TX, USA. FAU - Wang, Hannah Y AU - Wang HY AD - Baylor College of Medicine, Houston, TX, USA. FAU - Sadighi, Zsila AU - Sadighi Z AUID- ORCID: 0000-0003-1686-7760 AD - Department of Pediatrics, The University of Texas MD Anderson Cancer Center, Houston, TX, USA. FAU - Patel, Anisha B AU - Patel AB AUID- ORCID: 0000-0002-5372-784X AD - Department of Dermatology, Internal Medicine, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Blvd, Box 1452, Houston, TX, 77030, USA. apatel11@mdanderson.org. LA - eng PT - Journal Article DEP - 20240305 PL - United States TA - J Neurooncol JT - Journal of neuro-oncology JID - 8309335 SB - IM OTO - NOTNLM OT - Child OT - Mitogen-activated protein kinases OT - Neurofibromatoses OT - Retrospective studies OT - Skin diseases EDAT- 2024/03/06 00:42 MHDA- 2024/03/06 00:42 CRDT- 2024/03/05 23:32 PHST- 2024/01/24 00:00 [received] PHST- 2024/02/21 00:00 [accepted] PHST- 2024/03/06 00:42 [medline] PHST- 2024/03/06 00:42 [pubmed] PHST- 2024/03/05 23:32 [entrez] AID - 10.1007/s11060-024-04617-2 [pii] AID - 10.1007/s11060-024-04617-2 [doi] PST - aheadofprint SO - J Neurooncol. 2024 Mar 5. doi: 10.1007/s11060-024-04617-2.