COVID-19 mRNA Vaccines: The Molecular Basis of Some Adverse Events.

Each injection of any known vaccine results in a strong expression of pro-inflammatory cytokines. This is the result of the innate immune system activation, without which no adaptive response to the injection of vaccines is possible. Unfortunately, the degree of inflammation produced by COVID-19 mRNA vaccines is variable, probably depending on genetic background and previous immune experiences, which through epigenetic modifications could have made the innate immune system of each individual tolerant or reactive to subsequent immune stimulations.We hypothesize that we can move from a limited pro-inflammatory condition to conditions of increasing expression of pro-inflammatory cytokines that can culminate in multisystem hyperinflammatory syndromes following COVID-19 mRNA vaccines (MIS-V). We have graphically represented this idea in a hypothetical inflammatory pyramid (IP) and we have correlated the time factor to the degree of inflammation produced after the injection of vaccines. Furthermore, we have placed the clinical manifestations within this hypothetical IP, correlating them to the degree of inflammation produced. Surprisingly, excluding the possible presence of an early MIS-V, the time factor and the complexity of clinical manifestations are correlated to the increasing degree of inflammation: symptoms, heart disease and syndromes (MIS-V).

Epirubicin and docetaxel as neoadjuvant treatment of locally advanced breast cancer: a phase II study.

AIMS AND BACKGROUND: Neoadjuvant chemotherapy is the standard treatment for locally advanced breast cancer. The combination of anthracyclines and taxanes is considered the first choice chemotherapy in advanced breast cancer. We report here the overall results of a phase II study of epirubicin and docetaxel as neoadjuvant chemotherapy in advanced breast cancer. PATIENTS AND METHODS: Forty-five patients with locally advanced, nonmetastatic breast carcinoma were treated with epirubicin, 90 mg/m2, docetaxel, 75 mg/m2, intravenously, every 3 weeks for 4 cycles before and 4 cycles after surgery, followed by tamoxifen for 5 years if estrogen receptor positive and radiation therapy if indicated. Patient characteristics included a median age of 45 years; pre Ipostmenopausal, 311/14 patients; T3-T4 in 33, N0/N1 in 12/33; ductal/lobular in 42/3; ER+ in 23; and HER2 overexpression in 23. RESULTS: Clinical response included complete remission in 7 patients and partial remission in 27 (response rate, 75%). All 45 patients underwent surgery (quadrantectomy in 7). Histological examination of the breast and lymph nodes revealed no signs of disease in 3 patients and ductal carcinoma in situ only in 2. Twenty-five patients completed the chemotherapy program. G3-G4 toxicity included neutropenia in 39 patients. No other G3-4 toxicity nor toxic deaths occurred. Median relapse-free and overall survival were 35 and 56 months, respectively. CONCLUSIONS: The neoadjuvant treatment was active and well tolerated, but the incidence of pathologic complete remissions was relatively low.

Trastuzumab and vinorelbine as highly effective and safe therapy for HER-2-overexpressing metastatic breast cancer. A single institution experience.

AIMS AND BACKGROUND: Trastuzumab-based therapy has improved survival of women with human epidermal growth factor receptor 2 (HER2)-overexpressing metastatic breast cancer. STUDY DESIGN: From September 2002 to July 2006, 45 women with metastatic breast cancer HER2 3+, or 2+ and positive for HER2 gene amplification, were enrolled in the study and received a combination therapy with vinorelbine, 25 mg/m2 weeks 1 and 2, plus trastuzumab, 4 mg/kg loading dose and then 2 mg/kg weekly, in a three weeks cycle. Eligibility criteria included measurable disease and a baseline ejection fraction > or = 50%. Forty-two percent of the patients were not pretreated, whereas 58% had received a previous chemotherapy regimen for metastatic disease, including anthracyclines and/or taxanes (47%), and trastuzumab plus taxol (11%). RESULTS: We observed 14 (31%) complete responses and 21 (47%) partial responses, with an overall response rate of 78%. Stable disease > 6 months was assessed for 5 (11%) patients with a clinical benefit of 89%. Five (11%) patients progressed. With a median follow-up of 11 months, median time to progression was 9 months and median duration of response was 7.6 months for complete remissions and 4 months for partial remissions. Median survival was 29 months. CONCLUSIONS: In spite of a smaller dose intensity of vinorelbine than previously reported, the regimen evaluated was notably effective in terms of response rate, time to progression and survival, with very mild toxicity.

The real-time polymerase chain reaction-guided modulation of immunosuppression enables the pre-emptive management of Epstein-Barr virus reactivation after allogeneic haematopoietic stem cell transplantation.

To assess a real-time polymerase chain reaction-based modulation of immunosuppression in patients with an increasing Epstein-Barr virus (EBV) viral load, we studied 79 paediatric allogeneic stem cell transplantations (allo-SCT) performed between January 1998 and December 2003. EBV reactivation was observed in 42 of 79 patients (53%) after a median time of 45 d from allo-SCT: 37 (88%) and five (12%) patients had received the graft from an unrelated and a related donor respectively (P = 0.001). Twenty-eight patients (67%) had a viral load > or =300 genomic copies x10(5) peripheral blood mononuclear cells (PBMC) and antithymocyte globulin was the only factor significantly associated with EBV reactivation (P = 0.001, RR 7.1). Among these 28 patients, immunosuppression was suspended and reduced in 17 and 11 patients respectively. Overall, post-transplant lymphoproliferative disease was diagnosed in one of 79 patients (1%). The pre-emptive modulation of immunosuppression in patients with EBV reactivation and a viral load > or =300 genomic copies x10(5) PBMC did not negatively influence transplant-related mortality, overall survival or event-free survival. In conclusion, EBV reactivation is frequent even in 'low risk' patients and the pre-emptive modulation of immunosuppression enables it to be managed safely, with no significant flare in graft-versus-host disease status.