Autologous bone marrow transplantation. Current status and future directions

Area of Science:

• Hematology
• Oncology
• Transplantation Medicine

Background:

• High-dose chemotherapy followed by autologous marrow transplantation (AMT) is an intensive treatment modality.
• Its application spans various hematologic malignancies and solid tumors.
• Assessing the efficacy and toxicity of AMT is crucial for treatment optimization.

Purpose of the Study:

• To evaluate the current efficacy of high-dose chemotherapy with autologous marrow transplantation.
• To analyze response rates, survival data, and toxicities across different cancer types.
• To identify areas for improvement in treatment protocols.

Main Methods:

• A comprehensive literature search was conducted for studies published between 1978 and May 1988.
• Over 160 studies with adequate data on response, toxicity, or survival were selected.
• A meta-analysis was performed on pooled data including regimens, patient numbers, and outcomes.

Main Results:

• AMT demonstrated higher response rates compared to standard treatments for many cancers.
• Leukemias and lymphomas achieved 60-80% response rates with potential for cure.
• Solid tumors showed varied responses: 30% (gliomas) to 80% (breast cancer), with occasional long-term survival.

Conclusions:

• Systematically designed clinical trials and collaborative research can enhance AMT outcomes.
• Future studies should focus on disease-specific drug combinations and multiple high-dose therapy courses.
• Reducing tumor burden at treatment initiation and mitigating toxicity with growth factors are key areas.