Abstract PD2-01: High Ki-67 as a biomarker for identifying patients with high risk early breast cancer treated in monarchE

Review of novel and supplemental approvals of the targeted cancer drugs by the Food and Drug Administration in 2021

OBJECTIVE

This review aims to present the most recent results from clinical trials of targeted cancer drugs that led to the Food and Drug Administration approval in 2021 and reflect the changing treatment landscape of solid malignancies.

DATA SOURCES

Novel approvals and supplemental approvals in 2021 were retrieved from the official web page of the Food and Drug Administration (Drugs@FDA). This review did not include approvals for generics, biosimilars, imaging, and diagnostics agents.

DATA SUMMARY

This review included 10 novel drugs approved for 11 indications and 10 already-approved drugs approved for 21 indications by the Food and Drug Administration in 2021. Novel approvals mainly were related to treating an orphan disease. In addition, one-third of the supplemental approvals were given for neoadjuvant or adjuvant treatment, while the number of indications for each tumor site was as follows: gastrointestinal (7), genitourinary (5), skin (3), lung (2), breast (2), thyroid (1), and cervix (1).

CONCLUSIONS

Targeted cancer treatments are gaining more importance than ever in treating malignant diseases. As the approval of targeted cancer drugs provides a possibility for patients and this trend is expected to continue in the future, it remains vital for healthcare providers to stay up-to-date with newer therapeutic options.

Using Breast Cancer Gene Expression Signatures in Clinical Practice: Unsolved Issues, Ongoing Trials and Future Perspectives

The development of gene expression signatures since the early 2000's has offered standardized assays to evaluate the prognosis of early breast cancer. Five signatures are currently commercially available and recommended by several international guidelines to individualize adjuvant chemotherapy decisions in hormone receptors-positive/HER2-negative early breast cancer. However, many questions remain unanswered about their predictive ability, reproducibility and external validity in specific populations. They also represent a new hope to tailor (neo)adjuvant systemic treatment, adjuvant radiation therapy, hormone therapy duration and to identify a subset of patients who might benefit from CDK4/6 inhibitor adjuvant treatment. This review will highlight these particular issues, address the remaining questions and discuss the ongoing and future trials.