An observational study in Localized Osteosarcoma, sponsored by Italian Sarcoma Group. Recruiting at 16 sites in Italy. Open to participants aged Up to 40 Years. Per ClinicalTrials.gov, last updated 2026-09-02.
Sponsored by Italian Sarcoma Group · Observational
Observational prospective trial aimed to collect the collect demographic, clinical, surgical, pathological and molecular characteristics and treatment from patients affected by localized OsteoSarcoma (OS) treated according the AIEOP/Italian Sarcoma Group (ISG) OS 2021
Osteosarcoma is the most frequent primary malignant bone tumor in children and adolescents and is considered a rare disease.
The overall incidence of OS is 0.2-3 / 100,000 inhabitants per year with a bimodal distribution by age, with a first peak in adolescence.
Currently, the treatment strategy for localized OS includes courses of neo-adjuvant chemotherapy based on 3 agents: Adriamycin (ADM), cisplatin (CDP) and high dose methotrexate (HDMTX) followed by surgical removal of the primary tumor and subsequent adjuvant chemotherapy treatment.
The MAP (Methotrexate, Adriamycin, cisPlatin) regimen, with or without ifosfamide (IFO) and etoposide (ETO), is considered the "gold standard" for the treatment of localized osteosarcoma.
Given the rarity of the disease, it is considered appropriate to collect information prospectively on the diagnosis, chemotherapy and surgical treatment and outcomes on patients treated by the network of AIEOP and ISG Centers according to the recommendations on the treatment of localized OS AIEOP/ISG OS 2021.
This study will be active up to the next interventional prospective protocol aimed at the therapy of high-grade, non-metastatic OS.
Patients with localized high grade ostesarcoma of the extremities
Exclusion Criteria:
This cohort include patients affected by localized Osteosarcoma, referred to participating Institutions.
Other: Treatment of Osteosarcoma according the AIEOP/ISG OS 2021 recommendations (includes drugs, surgery, radiotherapy or any other received treatments)
This observational study collects all the treatments received by the patients according according the AIEOP/ISG OS 2021 and therefore includes drug/biological/surgical/ radiotherapy and any other applicable treatments
5 years Event Free Survival (EFS)
Onset of any event (an event is the defined as disease recurrence, death for disease or any other cause)
Time frame: 5 years
Overall Survival (OS)
Time elapsed for the diagnosis to the death for any cause
Time frame: at 5 years
Adverse events related to the treatments
Number of Participants with Treatment-Related Adverse Events as Assessed by Common Terminology Criteria for Adverse Events version 5.0
Time frame: Every 3 weeks (Week 3, week 6, week 9, week 12, ...) up to 36 months
Plan to share: No — No plan sharing
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Italian Sarcoma Group