Covid19, Hematologic Neoplasms, Malignant Lymphoma, Myeloma Multiple, Stem Cell Transplant Complications
Conditions
Keywords
Autologous stem cell transplantation, COVID-19
Brief summary
This retrospective observational cohort study aims to describe the impact of COVID-19 in patients treated with autologous stem cell transplantation (ASCT) for malignant disease in terms of risk factors, morbidity, need for supportive care and mortality. All patients treated with ASCT in Sweden from 1st January 2020 until 31st December 2020 are eligible for this study. Patients who also has tested positive for SARS-CoV-2 from start of conditioning or later will be identified through the national registry of the Public Health Agency of Sweden and a systematic analysis of their medical records will be performed.
Detailed description
Research question How does infection with SARS-CoV-2 affect patients with hematological malignancies who are treated with autologous hematopoietic stem cell transplantation? Study population All Swedish citizens treated with ASCT for malignant disease in Sweden from 1st January 2020 until 31st December 2020 are eligible for this study. There will be a minimum follow-up time of one month for all patients. Data collection and storage Patients will be identified using local ASCT registers at the seven university hospitals, as there is no national register for ASCT-patients in Sweden. These seven university hospitals are the only sights to perform ASCT in Sweden. The Public Health Agency of Sweden (Folkhälsomyndigheten - FHM) has the national responsibility to surveil and control communicable disease. The FHM uses several different surveillance systems to monitor the spread of COVID-19. Since COVID-19 is subject to mandatory reporting under the Communicable Diseases Act, physicians and laboratories continuously supply data to be analyzed daily by the FHM. The coverage of this database is estimated to be very high, close to 100%. For this study the investigators will link the patients identified through the ASCT-centers with the register of SARS-Cov-2 positive patients (SmiNet) held by the FHM. Patients who has tested positive for SARS-CoV-2 on the day of start of conditioning or at any given time thereafter will be included in the study. Inclusion of positive SARS-CoV-2 tests will start from 1st January 2020 until 31st March 2021 to allow for 3 months of follow-up after transplantation. For every ASCT-patient that has tested positive for COVID-19 after ASCT a systematic analysis of their medical records will be performed to describe the circumstances, impact and outcome of the COVID-19. All data collected will be stored in a deidentified data set on a secure server held by Dalarna Country Council where name and social security number have been erased and given a coded study number. Each patient will only be identified using a separately stored code key. All storage, correspondence and analysis with the code key and pseudonymized data set will adhere to current European General Data Protection Regulation (GDPR) guidelines. The code key will be destroyed as soon as data collection is completed, data quality is secured and the final report is published. The data set will be stored for 10 years and then be destroyed.
Interventions
OTHERAutologous stem cell transplantation
The study will describe the implications of COVID-19 infection following autologous stem cell transplantation
Sponsors
Karolinska University Hospital
Sahlgrenska University Hospital
Lund University Hospital
University Hospital, Linkoeping
University Hospital, Umeå
Region Örebro County
Uppsala University Hospital
Uppsala University
Study design
Observational model
COHORT
Time perspective
RETROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
* Diagnosis of hematological cancer (C81-C96 according to the International Classification of Diseases 10th revision (ICD-10). * Autologous hematopoietic stem cell transplantation performed 1 January 2020 until 31st December 2020 at a Swedish transplantation center. * Positive RT-PCR test for SARS-CoV-2 performed in Sweden
Exclusion criteria
\- Age below 18 years and 0 months at the time of transplantation
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Overall survival | 30 days | Overall survival after infection with COVID-19 |
| COVID-19 related mortality | within 6 months after infection | As classified by the WHO; a death resulting from a clinically compatible illness in a confirmed COVID-19 case, unless there is a clear alternative cause of death that cannot be related to COVID disease (e.g., trauma). There should be no period of complete recovery between the illness and death |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Hospitalization | Up to 15 months | Duration of hospitalization |
| Oxygen treatment | Up to 15 months | Duration of oxygen treatment |
| High-flow oxygen therapy | Up to 15 months | Duration of high-flow oxygen therapy |
| Non-invasive ventilation | Up to 15 months | Duration of non-invasive ventilation (NIV) |
| Intensive care | Up to 15 months | Duration of care in intensive care unit |
| Invasive mechanical ventilation | Up to 15 months | Duration of Invasive mechanical ventilation |
| ECMO | Up to 15 months | Duration of extracorporeal membrane oxygenation (ECMO) |
| Occurence of ARDS | Up to 15 months | Diagnosis of Acute respiratory distress syndrome (ARDS) |
| Occurence of arterial thrombosis | Up to 15 months | Event of arterial thrombosis |
| Occurence of venous thrombosis | Up to 15 months | Event of venous thrombosis |
| Occurence of arrhythmias | Up to 15 months | Event of recorded arrhythmias |
| Occurence of acute cardiac injury | Up to 15 months | Event of acute cardiac injury |
| Occurence of secondary infection | Up to 15 months | Event of any secondary infection |
| Occurence of cytokine release syndrome | Up to 15 months | Event of cytokine release syndrome |
| Elevated liver enzymes | At autologous stem cell transplantation or up to 15 months | Event of elevated liver enzymes at diagnosis of COVID-19 |
| Disease status | Prior to autologous stem cell transplantation | Description of disease status prior to autologous stem cell transplantation |
| Previous disease modifying treatment | Prior to autologous stem cell transplantation | Description of previous disease modifying treatment prior to autologous stem cell transplantation |
| Conditioning treatment | At autologous stem cell transplantation | Description of conditioning treatment prior to autologous stem cell transplantation |
| Time of infection | At autologous stem cell transplantation or up to 15 months | Time of COVID-19 in relation to autologous stem cell transplantation |
| Neutropenia | At autologous stem cell transplantation or up to 15 months | Event of neutropenia at diagnosis of COVID-19 |
| Elevated CRP | At autologous stem cell transplantation or up to 15 months | Event of elevated C-reactive protein (CRP) at diagnosis of COVID-19 |
| Elevated leukocyte count | At autologous stem cell transplantation or up to 15 months | Event of elevated leukocyte count at diagnosis of COVID-19 |
| Lymphocytopenia | At autologous stem cell transplantation or up to 15 months | Event of lymphocytopenia at diagnosis of COVID-19 |
| Elevated lactate dehydrogenase | At autologous stem cell transplantation or up to 15 months | Event of elevated lactate dehydrogenase at diagnosis of COVID-19 |
| Elevated ferritin | At autologous stem cell transplantation or up to 15 months | Event of elevated ferritin at diagnosis of COVID-19 |
| Elevated d-dimer | At autologous stem cell transplantation or up to 15 months | Event of elevated d-dimer at diagnosis of COVID-19 |
| Prolonged aPTT | At autologous stem cell transplantation or up to 15 months | Event of prolonged activated partial thromboplastin time (aPTT) at diagnosis of COVID-19 |
| Elevated troponin | At autologous stem cell transplantation or up to 15 months | Event of elevated troponin at diagnosis of COVID-19 |
| Elevated creatinine | At autologous stem cell transplantation or up to 15 months | Event of elevated creatinine at diagnosis of COVID-19 |
| Comorbidities | Prior to autologous stem cell transplantation | Description of comorbidities prior to autologous stem cell transplantation |
| Time of COVID-19 infection | Up to 15 months | Time of SARS-CoV-2 infection in relation to autologous stem cell transplantation |
Countries
Sweden
Outcome results
None listed