RESUMO
During the coronavirus disease 2019 pandemic, global approach was to isolate populations with quarantine procedures to reduce the spread of this deadly virus until effective treatments are found or vaccines are developed. mRNA-based vaccines became available in the United States in March 2020. The Food and Drug Administration even issued an Emergency Use Authorization for individuals 16 years and older in December 2020. However, these rapid developments have brought along other problems such as possible side effects. As we develop and test a new treatment, it became clear how important side-effect management is. Here, we present a case of cutaneous vasculitis that developed on the fourth day of SARS-CoV-2 mRNA vaccination. The patient was successfully treated with medium-dose methylprednisolone.
RESUMO
To evaluate the tumour-infiltrating lymphocyte (TIL) rates in breast tissue before and after neoadjuvant chemotherapy (NAC) and their impact on survival, eighty-four patients with locally advanced breast cancer (LABC) were assessed. Pre- and post-NAC TIL levels were determined using biopsy and surgical specimens, respectively. The median TIL rate was significantly different before (17.5%) and after (5%) NAC. Pre- and postoperative Ki-67 index, molecular subtype, pre- and post-NAC TIL concentration, and preoperative residual-cancer-burden TIL were significantly associated with pathological complete response (pCR). Specifically, higher pre-NAC TIL levels were associated with higher pCR rates. Postoperative Ki-67 index and pCR, and postoperative Ki-67 index were significant predictors of disease-free (DFS) and overall survival, respectively. The independent prognostic factors for DFS were postoperative Ki-67 score (hazard ratio [HR]: 6.16; p = 0.012), post-NAC TIL score (HR: 0.42; P = 0.041), and pCR (HR: 0.10; P = 0.038). Our study confirms that higher pre-NAC and lower postoperative TIL levels may be surrogate factors for longer DFS, and postoperative TIL rate may predict post-NAC pCR in patients with LABC.