Contributions
Abstract: S154
Type: Oral Presentation
Session title: Response, resistance and treatment-free remission in CML
Background
An outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) started in December 2019 in the province of Hubei in China. Italy was one of the most affected countries with many cases diagnosed already in February 2020 and a lockdown was declared on March 9th. Limited information has been reported with regard to the impact of the pandemic on chronic myeloid leukemia (CML) patients.
Aims
To observe the temporal course of Covid-19 infection and the characteristics of positive patients.
Methods
The Campus CML Italian group carried out a first survey on the management of CML patients during the lockdown. We launched a second survey during the pandemic phases 2 and 3, between May 2020 and January 2021.
Results
We collected retrospective information on 8665 CML patients followed at 46 centers throughout the country. Within this cohort, we recorded 217 Covid-19-positive symptomatic patients (2.5%). Most patients (57%) were diagnosed as having Covid-19 infection between September 2020 and January 2021; 30% were diagnosed in phase 1 (March-April 2020) and only 13% between May and August. Most of the positive patients were between 50 and 65 years (35%), while 26% had less than 50 years, 18.8% were between 65 and 75 years, and 11% had more than 75 years. A male prevalence was observed (73%). The median time from CML diagnosis to Covid-19 infection was 6 years (3 months-18 years). Fifty-six percent of patients presented concomitant comorbidities at the time of infection. When Covid-19 was diagnosed, 27% of patients were receiving imatinib, 26% nilotinib, 18% dasatinib, 8% ponatinib, 8% bosutinib, 2% asciminib, while 11% were not receive treatment. At the time of the infection, 74% of patients were in molecular remission, 6% in complete cytogenetic remission, 3% in partial cytogenetic remission, 6% in complete hematological response and 11% in treatment-free remission. At diagnosis, 28% of patients presented fever and respiratory symptoms, 13% cough, 10% isolated fever, 13% ageusia, 12% anosmia, 4% had more than 1 symptom, while 20% were completely asymptomatic. Twenty-one patients (9.6%) required hospitalization without the need of respiratory assistance, 18 (8.2%) were hospitalized for respiratory assistance, 8 (3.6%) were admitted to an ICU, while 150 patients (69%) were only quarantined. Twenty-three percent of patients discontinued TKI therapy during the infection. The source of contagion was familiar in 49% of patients, 18% due to work, 3% in healthcare professionals, whereas in 30% was not known. Twelve patients died due to Covid-19 infection with a mortality rate of 5.5% in the positive cohort and of 0.13% in the whole cohort. Five patients reported consequences post-infection: 1 patient reported a Guillan-Barrè syndrome, 1 patient a maculopapular rash, 1 patient a pulmonary fibrosis, 1 patient a bacterial endocarditis and 1 patient was diagnosed as having alterations of the microcirculation.
Conclusion
This study reports the 1-year of data on the Covid-19 infection in a specific hematological malignancy in the European country first hit by the pandemic. A longer follow-up is needed to further define the impact of Covid-19 infection sequelae in CML patients.
Keyword(s): Chronic myeloid leukemia, COVID-19, Tyrosine kinase inhibitor
Abstract: S154
Type: Oral Presentation
Session title: Response, resistance and treatment-free remission in CML
Background
An outbreak of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) started in December 2019 in the province of Hubei in China. Italy was one of the most affected countries with many cases diagnosed already in February 2020 and a lockdown was declared on March 9th. Limited information has been reported with regard to the impact of the pandemic on chronic myeloid leukemia (CML) patients.
Aims
To observe the temporal course of Covid-19 infection and the characteristics of positive patients.
Methods
The Campus CML Italian group carried out a first survey on the management of CML patients during the lockdown. We launched a second survey during the pandemic phases 2 and 3, between May 2020 and January 2021.
Results
We collected retrospective information on 8665 CML patients followed at 46 centers throughout the country. Within this cohort, we recorded 217 Covid-19-positive symptomatic patients (2.5%). Most patients (57%) were diagnosed as having Covid-19 infection between September 2020 and January 2021; 30% were diagnosed in phase 1 (March-April 2020) and only 13% between May and August. Most of the positive patients were between 50 and 65 years (35%), while 26% had less than 50 years, 18.8% were between 65 and 75 years, and 11% had more than 75 years. A male prevalence was observed (73%). The median time from CML diagnosis to Covid-19 infection was 6 years (3 months-18 years). Fifty-six percent of patients presented concomitant comorbidities at the time of infection. When Covid-19 was diagnosed, 27% of patients were receiving imatinib, 26% nilotinib, 18% dasatinib, 8% ponatinib, 8% bosutinib, 2% asciminib, while 11% were not receive treatment. At the time of the infection, 74% of patients were in molecular remission, 6% in complete cytogenetic remission, 3% in partial cytogenetic remission, 6% in complete hematological response and 11% in treatment-free remission. At diagnosis, 28% of patients presented fever and respiratory symptoms, 13% cough, 10% isolated fever, 13% ageusia, 12% anosmia, 4% had more than 1 symptom, while 20% were completely asymptomatic. Twenty-one patients (9.6%) required hospitalization without the need of respiratory assistance, 18 (8.2%) were hospitalized for respiratory assistance, 8 (3.6%) were admitted to an ICU, while 150 patients (69%) were only quarantined. Twenty-three percent of patients discontinued TKI therapy during the infection. The source of contagion was familiar in 49% of patients, 18% due to work, 3% in healthcare professionals, whereas in 30% was not known. Twelve patients died due to Covid-19 infection with a mortality rate of 5.5% in the positive cohort and of 0.13% in the whole cohort. Five patients reported consequences post-infection: 1 patient reported a Guillan-Barrè syndrome, 1 patient a maculopapular rash, 1 patient a pulmonary fibrosis, 1 patient a bacterial endocarditis and 1 patient was diagnosed as having alterations of the microcirculation.
Conclusion
This study reports the 1-year of data on the Covid-19 infection in a specific hematological malignancy in the European country first hit by the pandemic. A longer follow-up is needed to further define the impact of Covid-19 infection sequelae in CML patients.
Keyword(s): Chronic myeloid leukemia, COVID-19, Tyrosine kinase inhibitor