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1.
Nowotwory ; 71(5):303-310, 2021.
Article in English | EMBASE | ID: covidwho-1580000

ABSTRACT

Colorectal cancer is one of the most frequent malignant tumours in Poland, making up the third cause of cancer deaths both in women and in men with regards to the frequency of occurrence. The therapy of patients with high-stage colorectal cancer is palliative and should be conducted in a continual manner until the disease progression or unacceptable toxicity of treatment. By definition, palliative care aims at prolongation of the period to the exacerbation of the disease and of the overall survival with simultaneous guarantee of appropriate quality of life to the patients. A long-term use of a multidrug chemotherapy is often connected with the presence of clinically significant toxicity, therefore, de-escalation of systemic treatment is currently the subject of numerous analyses. The studies evaluating the effect of maintenance therapy on patient survival, prove that this kind of treatment makes up a valuable option in the case of patients in whom a good clinical effect is maintained with a concurrent reduction of toxicity of treatment. Especially in the context of the ongoing SARS-CoV-2 pandemic, monotherapy or less aggressive therapy should be discussed with patients.

2.
PLoS ONE ; 16(2), 2021.
Article in English | CAB Abstracts | ID: covidwho-1410710

ABSTRACT

Background: Sensitive and high throughput molecular detection assays are essential during the coronavirus disease 2019 (COVID-19) pandemic, caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). The vast majority of the SARS-CoV-2 molecular assays use nasopharyngeal swab (NPS) or oropharyngeal swab (OPS) specimens collected from suspected individuals. However, using NPS or OPS as specimens has apparent drawbacks, e.g. the collection procedures for NPS or OPS specimens can be uncomfortable to some people and may cause sneezing and coughing which in turn generate droplets and/or aerosol particles that are of risk to healthcare workers, requiring heavy use of personal protective equipment. There have been recent studies indicating that self-collected saliva specimens can be used for molecular detection of SARS-CoV-2 and provides more comfort and ease of use for the patients. Here we report the performance of QuantiVirusTM SARS-CoV-2 test using saliva as the testing specimens with or without pooling. Methods Development and validation studies were conducted following FDA-EUA and molecular assay validation guidelines. Using SeraCare Accuplex SARS-CoV-2 reference panel, the limit of detection (LOD) and clinical performance studies were performed with the QuantiVirusTM SARS-CoV-2 test. For clinical evaluation, 85 known positive and 90 known negative clinical NPS samples were tested. Additionally, twenty paired NPS and saliva samples collected from recovering COVID-19 patients were tested and the results were further compared to that of the Abbott m2000 SARS-CoV-2 PCR assay. Results of community collected 389 saliva samples for COVID-19 screening by QuantiVirusTM SARS-CoV-2 test were also obtained and analyzed. Additionally, testing of pooled saliva samples was evaluated.

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