Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 23, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/ijms23073540
Keywords
bone sarcoma; osteosarcoma; Ewing sarcoma of bone; chondrosarcoma; AYA cancer; pediatric cancer; tyrosine kinase inhibitor
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Bone sarcoma, a rare component of malignant solid tumors, presents various histological types and genomic mutations. Targeted drug investigations for bone sarcomas have not progressed like those for other solid tumors, with challenges in patient recruitment, especially among pediatric and young adult patients.
Bone sarcoma is a rare component of malignant solid tumors that accounts for only similar to 0.2% of malignancies. Bone sarcomas present various histological types, and genomic mutations differ markedly by the histological types. Although there are vast mutations in various bone sarcomas, most of them are non-actionable, and even potential targetable mutations that are actionable targets in other malignancies have not shown the appropriate responses in clinical trials for bone sarcomas. Investigations of new systemic therapy, including molecular targeted therapies for bone sarcomas, have thus not progressed like those for other solid tumors. Another problem is that high rates of pediatric/adolescent and young adult patients have bone sarcomas such as osteosarcoma, and patient recruitment for clinical trials (especially randomized trials) is challenging. For pediatric patients, evaluations of tolerability and appropriate dose modifications of new drugs are needed, as their findings could provide the threshold for investigating new drugs for bone sarcomas. To solve these problems, improvements in registry systems, real world data, and pediatric extrapolation have been attempted. We review the issues regarding targeted drug investigations for bone sarcomas, focusing on the current clinical evidence and efforts to resolve these issues.
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