Related Experiment Video
Updated: Jan 22, 2026

Detection of Targetable Alterations in Non-small Cell Lung Cancer using Next-generation Sequencing
Published on: October 10, 2025
Topotecan in small cell lung cancer
1Department of Medicine, University of Wisconsin Comprehensive Cancer Center, Madison 53792, USA.
New chemotherapy drug topotecan shows promise for treating relapsed small cell lung cancer (SCLC). This topoisomerase I inhibitor offers a potential new option for patients with SCLC who have not responded to initial treatments.
Area of Science:
- Oncology
- Medical Research
- Pharmacology
Background:
- Lung cancer remains a leading cause of cancer death.
- Small cell lung cancer (SCLC) has high initial treatment response rates but frequently relapses.
- Effective treatments for relapsed SCLC are urgently needed.
Purpose of the Study:
- To evaluate the efficacy of topotecan, a novel topoisomerase I inhibitor, in patients with relapsed small cell lung cancer.
- To assess topotecan as a potential non-cross-resistant chemotherapeutic agent for SCLC.
Main Methods:
- Clinical trials (Phase II and III) were conducted to assess topotecan's efficacy.
- Preclinical studies and Phase I trials informed the efficacy assessment.
Main Results:
- Topotecan demonstrated activity in preclinical studies and Phase I trials for SCLC.
- Ongoing Phase II and III trials are evaluating its effectiveness in relapsed SCLC.
Conclusions:
- Topotecan shows potential as a valuable alternative treatment for relapsed small cell lung cancer.
- Further clinical trials are assessing its role in expanding SCLC treatment options.
Related Concept Videos
Lung Capacity
Cancer Cell Migration through Invadopodia
Adaptive Mechanisms in Cancer Cells
Some of the advantages that cancer cells have on normal cells include - enhanced ability to divide without terminally differentiating, induce new blood vessel formation,...
Cancer Stem Cells and Tumor Maintenance
Cancer stem cells are thought to originate from tissue-specific normal stem cells or progenitor cells. The normal stem cells usually reside in...
Pleura of the Lungs
Distinctive Features of Adult Stem Cells vs Cancer Stem Cells
Adult stem cells
Adult stem cells are tissue-specific; hence, they divide to develop the tissue from which they originate. One type of adult stem cell is the epithelial stem cell, which gives rise to the keratinocytes in the multiple layers of epithelial cells in the epidermis of the skin. Adult bone marrow has three distinct types of stem cells:...

