Résumé
Background: COVID-19 pandemic still pose a substantial threat worldwide despite increasing vaccine availability. Patients with haematological malignancies have been shown to have increased risk of contracting COVID-19 and are more susceptible to develop severe illness from SARS-CoV- 2 infection. The immune response to vaccines is impaired in patients with haematological malignancy due to underlying disease or antineoplastic therapies. The monoclonal-antibody combination, Evusheld is composed of tixagevimab and cilgavimab, two neutralising antibodies against SARS-CoV- 2. It has been shown to be safe and have efficacy for the prevention of COVID-19. Our aim of study is to describe the incidence and outcome of breakthrough COVID-19 infection among patients who received Evusheld in our centre and analyse the factors that possibly increase the risk of breakthrough infection. Material(s) and Method(s): A retrospective review of all adult patients with haematological malignancy who received tixagevimab/ cilgavimab 150/150 mg injection in Hospital Pulau Pinang from 1 July 2022 to 31 August 2022 with a follow-up period to 30 November 2022 was conducted. Demographic data, clinical characteristics and outcome will be retrieved from patient's medical records. Data were analysed using Statistical Package for Social Sciences software (version 21.0). Result(s): A total of 96 patients (50 males and 46 females) received tixagevimab/cilgavimab injection during the study period with a median age of 61 years (range 19-82). Majority of them were diagnosed with multiple myeloma (42.7%), followed by lymphoma (33.3%) and leukaemia (24%). One third of them had history of therapy with monoclonal antibody and 20% had haematopoietic stem cell transplantation. No major adverse effects of tixagevimab/cilgavimab injection were noted among the study population. Of the 12 patients (12.5%) who had COVID-19 infection, all of them had mild infection;three were asymptomatic and six patients received Paxlovid antiviral therapy. The median time from tixagevimab/cilgavimab to the onset of COVID-19 infection was 35 days (range 5-97 days). The mean age of patients with breakthrough COVID-19 infection were older compared to those without breakthrough infection but was not statistically significant. The incidence of breakthrough COVID-19 infection was not affected by type of haematological malignancy, history of monoclonal antibody therapy or COVID-19 vaccination. Discussion and Conclusion(s): Our findings showed that tixagevimab/cilgavimab was safe and effective in preventing COVID-19- related morbidity and mortality among patients with haematological malignancy during the study period. However, the limitation is the lack of access to whole genome sequencing for detection of resistant variants for breakthrough infections.
Résumé
Background: The COVID-19 pandemic has led to disruptions in cancer treatment delivery among breast cancer patients in the U.S. However, it is currently unknown whether racial/ethnic disparities exist in cancer treatment disruptions among patients with breast cancer and SARS-CoV-2 infection. Methods: We obtained data from the ASCO Survey on COVID-19 in Oncology Registry (March 2020-July 2021) describing breast cancer patients diagnosed with SARS-CoV-2 during their care treated at 46 practices across the US. Data included patient demographics, SARS-CoV-2 diagnosis and treatment, breast cancer characteristics, and modifications to cancer treatment plans. Breast cancer treatment delay or discontinuation (TDD) was defined as any treatment postponed more than two weeks from the originally scheduled date. We computed adjusted odds ratios (aOR) using multivariable logistic regression, accounting for non-independence of patients within hospitals to evaluate racial/ethnic disparities of TDD. Multivariable models were adjusted for age, sex, number of comorbidities, cancer extent, ECOG performance score, pandemic period based on case peaks (< 06/2020, 06-12/2020, 01-07/2021), and COVID-19 severity (death/hospitalization/ICU admission/mechanical ventilation). Results: Breast cancer patients (n = 804) with SARS-CoV-2 were mostly aged 50 years and above (75%) and urban residents (83%). The racial/ethnic makeup of the sample included: 13.3% non-Hispanic Black/African American (NH-Black), 11.7% Hispanic/Latinx, 4.9% American Indian/Alaskan Native (NH-AI/ AN), 4.6% NH-Asian, and 65% NH-White. At SARS-CoV-2 diagnosis, 736 patients (91%) were scheduled to receive drug-based therapy (78%), radiation therapy (8%), or surgery (6%), of whom 39% experienced TDD. Across treatment modalities, the most commonly reported TDD reason from the clinic perspective was the patient's COVID-19 disease (∼90%). Overall, NH-Black (62%), Hispanic/Latinx (44%), and NH-Asian (42%) adults with breast cancer and SARS-CoV-2 were more likely to experience TDD versus NH-White adults (34%) (p < 0.001). In multivariable analyses, NH-Black cancer patients were more likely to experience TDD compared to NH-White patients (aOR: 3.12, 95% CI: 1.96-5.47). The data suggest Hispanic/Latinx (aOR: 1.34, 95% CI: 0.78-2.30) breast cancer patients may also experience TDD, although not statistically significant. No association was observed among NH-Asian (aOR: 1.16, 95% CI: 0.50-2.73) or NH-AI/AN (aOR: 0.64, 95% CI: 0.28-1.52) breast cancer patients with TDD. Conclusions: Black or African American breast cancer patients are more likely to experience cancer care disruptions during the pandemic. Future research should evaluate the long-term impacts of care disruptions on breast cancer outcomes among minoritized US communities.
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INTRODUCTION: The coronavirus disease 2019 (COVID-19) pandemic posed a significant and urgent threat to global health and economy. Currently, there is no effective treatment known to alter the course of COVID-19. Convalescent plasma (CP) has been used previously to treat several types of infections during pandemics. The aim of our study is to evaluate the efficacy of CP in the treatment of severe COVID-19 infections at Hospital Sultanah Bahiyah, Kedah, Malaysia. MATERIALS AND METHODS: A retrospective cross-sectional study of all severe COVID-19 patients who received CP treatment from 1st August 2020 until 31st December 2020 was conducted. Clinical outcomes were compared before and after CP transfusion. RESULTS: Thirty-four patients were enrolled and received CP transfusion during the study period. The most common presenting complaints were fever (64.7%) and cough (58.8%). Fourteen patients showed improvement in oxygen support after CP transfusion. Several laboratory parameters also improved such as increased lymphocyte count (1.48 vs 1.98, p=0.008) and decreased C-reactive protein levels (28.1 vs 10.6, p=0.004), and these were statistically significant. Median time from symptoms onset to CP transfusion was 6 days (range 1-11) while median time from PCR diagnosis to CP transfusion was 5 days (range 1-11). One patient developed urticaria after CP transfusion and no severe adverse events were observed. Two of our patients passed away due to secondary causes. CONCLUSION: This study showed CP treatment was well tolerated and could potentially prevent progression of COVID-19 to a severe disease if administered early during the viraemic phase. Further evaluation with randomized control trial should be conducted to help ascertain the optimal dose and effectiveness of CP treatment, in correlation with the IgG titer of the donated CP.