Clinical Outcomes after Immunotherapies in Cancer Setting during COVID-19 Era: A Systematic Review and Meta-Regression
1
Department of Symptom Research, Unit 1450, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030, USA
2
Clinical Oncology, Faculty of Medicine, Ain Shams University, Cairo 11591, Egypt
3
Department of Cardiac Surgery, Spedali Civili di Brescia, 25123 Brescia, Italy
4
Department of Stem Cell Transplantation, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
5
Blood and Marrow Transplant Center, Methodist Le Bonheur, Memphis, TN 38104, USA
6
Research Medical Library, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
7
Department of Emergency Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
*
Author to whom correspondence should be addressed.
Reports 2022, 5(3), 31; https://doi.org/10.3390/reports5030031
Submission received: 29 June 2022
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Revised: 15 July 2022
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Accepted: 19 July 2022
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Published: 25 July 2022
(This article belongs to the Special Issue Novel Aspects of COVID-19 after a Two-Year Pandemic)
Abstract
:Background: This study aims to describe COVID-19–related clinical outcomes after immunotherapies (ICIs) for cancer patients. Methods: In this meta-analysis, we searched databases to collect data that addressed outcomes after immunotherapies (ICIs) during the COVID-19 pandemic. The primary endpoint was COVID-19–related mortality. Secondary endpoints included COVID-related hospital readmission, emergency room (ER) visits, opportunistic infections, respiratory complications, need for ventilation, and thrombo-embolic events. Pooled event rates (PERs) were calculated and a meta-regression analysis was performed. Results: A total of 262 studies were identified. Twenty-two studies with a total of forty-four patients were eligible. The PER of COVID-19–related mortality was 39.73%, while PERs of COVID-19–related ER visits, COVID-19–related pulmonary complications, and COVID-19–related ventilator needs were 40.75%, 40.41%, and 34.92%, respectively. The PER of opportunistic infections was 34.92%. The PERs of the use of antivirals, antibiotics, steroids, prophylactic anticoagulants, and convalescent plasma were 62.12%, 57.12%, 51.36%, 41.90%, and 26.48%, respectively. There was a trend toward an association between previous respiratory diseases and COVID-19–related mortality. Conclusion: The rates of COVID-19–related mortality, ER visits, pulmonary complications, need for a ventilator, and opportunistic infections are still high after ICIs during the COVID-19 pandemic. There was a trend toward an association between previous respiratory diseases and COVID-19–related mortality.
1. Introduction
Cancer patients could be more susceptible to COVID-19 infection because of their vulnerable immunity status due to the cancer itself, as well as the cancer treatment [1]. Administering immune checkpoint inhibitors (ICIs) during the COVID-19 era comes with challenges [2,3]. However, the data addressing the impact of ICIs on COVID-19–related outcomes are unclear [4,5], considering the known fact that ICIs restore immune competency [6]. Some data showed that receipt of ICIs does not negatively impact the outcomes after COVID-19 infection [5]. Thus, such challenges, debatable outcomes, and limited existing data necessitate a systematic review.
The challenges of administering ICIs during the COVID-19 era include the potential overlap between COVID-19–related interstitial pneumonia and possible ICI-induced lung injury [2,3,7]. The overall incidence rate of ICI-induced pneumonitis ranges from 2.5% to 10%; yet, it could be fatal, accounting for 35% of ICI-related mortality [2,8]. This challenge is greater in lung cancer patients receiving ICIs with or without local radiotherapy who are at risk for COVID-19 infection [9]. The immune hyperactivation induced by ICIs initiates cytokine release syndrome (CRS) (elevated interleukins and cytokines with subsequent organ failure and death). Similar cytokine storms have been observed after COVID-19 infection with similarly fatal outcomes of organ failure and death [10,11]. Given the similarity of the presentations of underlying COVID-19–induced and ICI-induced lung injury, diagnostic difficulty or delay and the synergistic effect of ICI- and COVID-19–induced lung injury could add to the fatality of the outcomes [12]. Fortunately, ICI-induced CRS is quite rare, and a COVID-19–induced cytokine storm is not an early event in the COVID-19 trajectory [7]. Such observations leave space for early intervention and careful patient screening/selection and monitoring to allow cancer patients in need of ICIs to receive their treatment safely and effectively during the COVID-19 era.
Given that the duration of the pandemic and the trajectory of COVID-19 infections are still unknown and unpredictable, we undertook a systematic review to obtain solid data showing patient characteristics and COVID-19–related outcomes after ICIs during the COVID-19 era. Care providers need these data to create effective, tolerable ICI treatment plans without compromising safety or outcomes. The objective of this systematic review was to address the clinical outcomes after ICIs for cancer patients during the COVID-19 era. The primary endpoint was COVID-19–related mortality and the secondary endpoints included COVID-19–related therapy, readmission to the hospital, ER visits, opportunistic infections, respiratory complications, need for ventilation, need for tracheostomy, and thrombo-embolic events.
2. Methodology
This study was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. The Newcastle–Ottawa Quality Assessment Scale for cohort studies was used [13].
2.1. Literature Search
We searched the Ovid MEDLINE, Ovid Embase, Clarivate Analytics Web of Science, PubMed, and Wiley-Blackwell Cochrane Library databases for publications in the English language from 1 December 2019 to 15 October 2020. The following concepts were searched for using subject headings and keywords as needed: “COVID-19”, “severe acute respiratory syndrome coronavirus 2”, “SARS-CoV-2”, “coronavirus infections”, “novel coronavirus”, “cancer”, “neoplasms”, “tumor”, “leukemia”, “lymphoma”, “melanoma”, “carcinoma”, “sarcoma”, “oncology”, “checkpoint inhibitors”, “programmed cell death 1”, “programmed death ligand 1”, “PD-1”, “PD-L1”, “cytotoxic T lymphocyte associated antigen 4”, “CTLA 4”, “ipilimumab”, “pembrolizumab”, “nivolumab”, “atezolizumab”, “durvalumab”, “avelumab”, “cemiplimab”, “chimeric antigen receptor t-cell therapy”, “adoptive immunotherapy”, etc. The search terms were combined by “or” if they represented similar concepts and combined by “and” if they represented different concepts. The complete search strategies are detailed in Tables S1–S4.
2.2. Study Selection
Eligible studies were required to evaluate measurable outcomes related to COVID-19 infection in cancer patients on ICIs during the COVID-19 pandemic. Owing to limited publications in this unique cohort, we included case presentations and case studies. To ensure inclusion of all available data, all bibliographies were searched for potential eligible studies (i.e., backward snowballing). Nevertheless, abstracts, reviews, and expert opinions were excluded, as were studies that were not exclusively of ICI-treated patients and studies with insufficient information about the characteristics or outcomes (listed below).
2.3. Data Extraction and Endpoints
Two reviewers (M.K. and A.Q.) independently assessed the eligibility. Then M.K., A.Q., and J.J. extracted the data from the eligible studies and tabulated the data using Excel software (Microsoft Corporation, Redmond, WA, USA).
Data on study period, study center, country, type of cancer, type of study, and sample size were retrieved. We abstracted age, gender, presence of hypertension, diabetes mellitus, renal insufficiency, smoking history, pre-existing chronic obstructive pulmonary disease, cerebrovascular accident, and dyslipidemia.
We also collected information about previous and current cancer treatments, type of cancer and ICI(s), cancer status, in-hospital COVID-19 infection, onset of COVID-19 infection in relation to receipt of ICIs, and laboratory and pulmonary findings at diagnosis of COVID-19 infection and their follow-up data if presented. To assess COVID-19–related therapy use, we recorded use of steroids (yes/no, dosage, and duration), use of antivirals, antibiotics, convalescent plasma, prophylactic coagulations, and antibodies. Finally, we assessed the following outcomes when they occurred because of COVID-19 infection: rates of readmission, emergency room (ER) visits, intensive care unit (ICU) admission, need for tracheostomy, need for ventilation, mortality, and complications, for instance pulmonary problems, thrombo-embolic events, and fungal and other opportunistic infections.
The primary endpoint of the analysis was COVID-19–related mortality. Secondary endpoints included COVID-19–related therapy, readmission to the hospital, ER visits, opportunistic infections, respiratory complications, need for ventilation, need for tracheostomy, and thrombo-embolic events.
2.4. Statistical Analysis
Pooled event rates (PERs) with 95% confidence intervals (CIs) were calculated for the study outcomes. Meta-regression was performed to explore the relationship between COVID-19–related mortality and clinical characteristics. These results were reported as a regression coefficient (i.e., beta). In all analyses, studies were weighted by the inverse of the variance of the estimate for that study, and between-study variance was estimated with the DerSimonian–Laird method with a random-effects model. Studies with zeros were included in the meta-analysis, and treatment arm continuity correction was applied in studies with zero cell frequencies.
Heterogeneity was based on the Cochran Q test, with I2 values. In the case of heterogeneity I2 > 50%, individual study inference analysis was performed through a “leave-one-out” sensitivity analysis. Funnel plots by graphical inspection and Egger regression test were used for assessment of publication bias. In the case of asymmetry positivity, visual assessment and Duval and Tweedie’s “trim and fill” method were used for further assessment.
Hypothesis testing for equivalence was set at the two-tailed 0.05 level. All analyses were performed using R version 4.1.0 (R Project for Statistical Computing) and RStudio version 1.4.1717, using the “meta” and “metafor” packages.
3. Results
A total of 262 studies were identified in the databases. After exclusion of duplicates, 162 studies were screened. Then, we excluded 122 non-eligible studies. Forty full-text articles were assessed for eligibility. Finally, 22 studies with a total of 44 patients met the eligibility criteria. Supplementary Figure S1 shows the PRISMA flow diagram. Table 1 shows the studies’ characteristics and patient demographics. Supplementary Table S5 shows the overall baseline patient demographics. Patients’ average age was 57.2 ± 17.4 years. A total of 66% were men, and 53% were current/former smokers. Totals of 61%, 36%, 30%, and 15% had hypertension, pre-existing chronic obstructive pulmonary disease, diabetes mellitus, and cerebrovascular accident, respectively. A total of 58% of patients had previous cancer therapy before receipt of ICIs. The top presenting COVID-19 symptoms were fever (74%), cough (57%), and dyspnea (52%), while ground glass opacity (64%), infiltrate (27%), and consolidation (27%) were the top radiologic findings. The Newcastle–Ottawa Quality Assessment Scale for cohort studies is shown in Supplementary Table S6 [13].
The PER of COVID-19–related mortality was 39.73% (95% CI: 26.32–54.87%) (Figure 1), while the PER of COVID-19–related ER visits, pulmonary complications, and need for ventilation were 40.75% (95% CI: 19.63–65.95%), 40.41% (95% CI: 21.81–62.25%), and 34.92% (95% CI: 17.34–57.86%), respectively (Figure 2 and Figure 3, Supplementary Figure S2). The PER of opportunistic infections was 34.92% (95% CI: 17.34–57.86%) (Supplementary Figure S3). Table 2 and Supplementary Figures S4–S8 show the PERs of the use of antivirals (62.12%), antibiotics (57.12%), steroids (51.36%), prophylactic anticoagulants (41.90%), and convalescent plasma (26.48%). As shown in Table 2, none of the patients in the included studies received antibodies, needed readmission, needed tracheostomy, or developed thrombo-embolic events due to COVID-19 infection. Nevertheless, 27% of patients had airway problems after COVID-19 infection in the nine included studies that assessed this outcome.
The meta-regression (Table 3) indicated a trend toward association between previous respiratory diseases and COVID-19–related mortality (p = 0.0861). No other characteristic showed a significant association with COVID-19–related mortality in the meta-regression analysis.
4. Discussion
Our systematic review of COVID-19–related outcomes after ICIs reported the rates of COVID-19–related mortality, ER visits, pulmonary complications, need for a ventilator, and opportunistic infections in cancer patients on ICIs during the COVID-19 pandemic. While there was a trend toward association between previous respiratory diseases and COVID-19-related mortality, no other characteristic was associated with COVID-19-related mortality in the meta-regression analysis.
Immunotherapies have revolutionized cancer care. Nevertheless, immunotherapies modulate the immune system, induce unique adverse events, and are usually administered for long durations. Further, managing the resultant, potentially fatal morbidities after immunotherapies is a clinical challenge, especially during the pandemic [1,14]. However, the exact impact of COVID-19 infection on the risk of mortality and morbidities after immunotherapies is still uncertain. Our data showed that the PER of COVID-19–related mortality was 39.73% in cancer patients treated with ICIs during the pandemic. Similarly high COVID-19–related mortality rates in patients on ICI therapy during the pandemic were reported by Dai et al. (33%) [1] and Robilotti et al. (36%). Yet, Robilotti et al. [15] highlighted that receiving ICIs did not impact the death rate during the COVID-19 era.
While patients on ICIs have a certain level of risk for developing infectious diseases [16], the risk of COVID-19 infection after ICIs increased only after the use of corticosteroids and/or TNF-α inhibitors [17]. However, other studies reported that COVID-19 infection rates are low after ICIs and that receipt of ICIs did not increase the risk of COVID-19 infection [18]. These low rates have been attributed in part to the high compliance with social distancing and mask-wearing in cancer-setting care. Additionally, the immunosuppressive effect of ICIs modulates the cytokine release syndrome associated with severe COVID-19 infection [19,20,21,22]. For these reasons, some ICI-treated patients with COVID-19 infection are asymptomatic and subsequently do not seek to be tested for COVID-19. Further, at certain stages of the treatment course, ICIs restore cellular immunocompetence, which makes patients on ICIs less prone to infection [6,23]. However, close monitoring is still needed.
Based on the data from this meta-analysis, the top presenting COVID-19 symptoms were fever (74%), cough (57%), and dyspnea (52%), while ground glass opacity (64%), infiltrate (27%), and consolidation (27%) were the most common imaging findings. Considering the high rate of pulmonary complications and need for ventilators (40% and 35%), close and cautious monitoring is warranted [24], with particular focus on excluding bacterial co-infection, which has been found to increase the risk of poor outcomes. The similarities in presentation, response to steroids/antibodies, chest imaging findings, and pathological characterization between the lung injury induced by COVID-19 and ICIs are clinical challenges in the management of cases treated with ICIs during the COVID-19 era [2,11,12]. The massive amount of activated immune cells after ICI therapy may delay the diagnosis of COVID-19 infection, as these cells are very hypermetabolic on fluorodeoxyglucose positron emission tomography [25]. Further, steroids could relieve both COVID-19– and ICI-induced lung injury. On the basis of pathological findings after COVID-19 infection (hyaline membrane formation and pulmonary edema), steroids could resolve COVID-19–induced lung injury. However, steroid use should be timely optimized to treat severe respiratory stress after COVID-19 infection [11]. Additionally, monoclonal antibodies showed improvement in levels of organ toxicity induced by either ICIs or COVID-19 [26,27]. Yet, the efficacy of monoclonal antibodies in treating COVID-19–induced injury is still under investigation. Further, the granulocyte colony-stimulating factor and erythropoietin play important roles whenever indicated [28,29].
Managing COVID-19–related complications in patients on ICIs is another challenge. We found that the PER of opportunistic infections was 34.92%. Nevertheless, none of the patients in the included studies needed readmission, needed tracheostomy, or developed thrombo-embolic events due to COVID-19 infection. However, 27% of the patients in nine included studies had airway problems after COVID-19 infection. We also presented PERs of the use of antivirals (62.12%), antibiotics (57.12%), steroids (51.36%), prophylactic anticoagulants (41.90%), and convalescent plasma (26.48%) after COVID-19 infection. Most cancer care centers agree on continuing ICIs after COVID-19 infection [4,30], and Amin et al. advised continuing the standard management of immunotherapy-induced adverse events in these patients as long as protective measures are closely adhered to [21]. Nevertheless, timing is key; since most patients experience immunotherapy-induced adverse events within the first 6 months of treatment [7], patients who are going to start ICIs during the pandemic must be carefully selected and monitored. Furthermore, pathological activation of immune response usually occurs during the late stage of COVID-19 infection [11].
Some authors have explored the effect of treatment frequency and time elapsed after ICIs on COVID-19 infection severity. Robilotti et al. [15] mentioned that ICIs were one of the predictors of the need for hospitalization and developing severe COVID-19 infection, while others did not observe any statistically significant association between receipt of ICIs and the severity of COVID-19 infection [18,31]. We may better explain these findings when we have a better understanding of the crosstalk between the respective immune activation pathways that are secondary to ICI treatment and COVID-19–induced cytokine release syndrome. Nevertheless, modulating the dosage and schedule of ICIs may benefit individual patients [32]. On the other hand, the severity of COVID-19 infection has been observed to be high in patients with lung cancer [33,34], especially after ICIs, as reported by Robilotti et al. [15]. However, Robilotti et al. [15] mentioned that the severity of COVID-19 infection was similarly high in non-lung-cancer patients who had ICIs. Nevertheless, other studies did not find an association between receipt of ICIs and poor outcomes of COVID-19 infection [4,18,33]. Of note, Robilotti et al. attributed the difference between their findings and other studies to their inclusion of more patients and their assessment of infection severity in terms of significant oxygen need rather than death, which was the outcome evaluated by studies that did not show any association between severity and outcomes.
We found a trend toward the association between previous respiratory diseases and COVID-19–related mortality. No other characteristic showed a significant association with COVID-19–related mortality in the meta-regression analysis. Our systematic review provides essential information to guide the care after ICIs during the COVID-19 era. Yet, we acknowledge that the existing data are still limited. Global, harmonized data collection is exceptionally needed to support solid guidelines. We believe that further understanding of the COVID-19- and ICI-induced lung injury will improve our management of patients during the COVID-19 era.
Supplementary Materials
The following supporting information can be downloaded at: https://www.mdpi.com/article/10.3390/reports5030031/s1, Figure S1: Preferred reporting items for systematic reviews and meta-analyses diagram of the included studies; Figure S2: Forest plots of the need for ventilation due to COVID-19 infection; Figure S3: Forest plot of opportunistic infections; Figure S4: Forest plot of the use of antivirals for COVID-19 infection; Figure S5: Forest plot of the use of antibiotics for COVID-19 infection; Figure S6: Forest plot of the use of steroids due to COVID-19 infection; Figure S7: Forest plot of the use of prophylactic anticoagulants due to COVID-19 infection; Figure S8: Forest plot of the use of prophylactic convalescent plasma due to COVID-19 infection; Table S1: Ovid MEDLINE search strategy; Table S2: Ovid Embase search strategy; Table S3: Web of Science search strategy; Table S4: Cochrane Library search strategy; Table S5: Overall baseline patient demographics; Table S6: Newcastle–Ottawa Scale of included studies.
Author Contributions
Conceptualization, M.K. and Y.G.; methodology, M.K., Y.G. and M.B.; software, M.B.; validation, M.K., Y.G., M.B., A.Q. and J.J.; formal analysis, M.B.; investigation, M.K., Y.G., M.B., A.Q. and J.J.; data curation, M.K., Y.G., M.B., A.Q. and J.J.; writing—original draft preparation, M.K., Y.G. and M.B.; writing—review and editing, M.K., Y.G., M.B., A.Q. and J.J.; visualization, M.B. and M.K.; supervision, M.K.; project administration, M.K. All authors have read and agreed to the published version of the manuscript.
Funding
This research received no external funding.
Institutional Review Board Statement
Not applicable.
Informed Consent Statement
Not applicable.
Data Availability Statement
Not applicable.
Acknowledgments
The authors appreciate the support from the Research Medical Library at The University of Texas MD Anderson Cancer Center, especially the great help from Sarah Bronson for editing the draft.
Conflicts of Interest
The authors declare no conflict of interest.
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Figure 1.
Forest plot of the primary endpoint of COVID-19–related mortality.
Figure 2.
Forest plot of COVID-19–related ER visits.
Figure 3.
Forest plots of pulmonary complications due to COVID-19 infection.
Table 1.
Characteristics of the eligible studies and demographics of the patients in the included studies.
Table 1.
Characteristics of the eligible studies and demographics of the patients in the included studies.
| Author | Year | Institution | Country | Study Type | N | Mean Age | Male | Smoking History | HTN | DM | Dyslipidemia | CKD | Respiratory Conditions | CVA |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yu | 2020 | Zhongnan Hospital of Wuhan University | China | Case series | 2 | NA | 2 | NA | NA | NA | NA | NA | NA | NA |
| Figuero-Perez | 2020 | University of Salamanca | Spain | Case report | 1 | 76 | 1 | NA | NA | NA | NA | NA | 1 | NA |
| Damato | 2020 | Oncologico e Tecnologie Avanzate, Azienda USL—IRCCS Reggio Emilia | Italy | Case series | 3 | 60.3 | 2 | 2 | NA | NA | NA | NA | NA | NA |
| Schmidle | 2020 | Technical University of Munich | Germany | Case report | 1 | 47 | 0 | NA | NA | NA | NA | NA | NA | NA |
| Kalinsky | 2020 | Columbia University Irving Medical Center | USA | Case report | 1 | 32 | 0 | 0 | NA | NA | NA | NA | NA | NA |
| Shaverdian | 2020 | Memorial Sloan Kettering Cancer Center | USA | Case series | 1 | 73 | 0 | NA | NA | NA | NA | NA | NA | NA |
| Ning | 2020 | The University of Texas MD Anderson Cancer Center | USA | Case series | 2 | 61.5 | 1 | NA | NA | NA | NA | NA | NA | NA |
| Rolfo | 2020 | Marlene and Stewart Comprehensive Cancer Center | USA | Case series | 2 | 65 | 1 | 2 | NA | NA | NA | NA | NA | NA |
| Spoto | 2020 | University Campus Bio-Medico of Rome | Italy | Case report | 1 | 55 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| Di Giacomo | 2020 | University Hospital of Siena | Italy | Case series | 2 | 62.5 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Wei | 2020 | Huazhong University of Science and Technology | China | Case series | 1 | 30 | 1 | NA | NA | NA | NA | NA | NA | NA |
| OKelly | 2020 | Mater Misericordiae University Hospital | Ireland | Case report | 1 | 22 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Souza | 2020 | Hospital Israelita Albert Einstein | Brazil | Case series | 2 | 78.5 | 1 | NA | NA | NA | NA | NA | NA | NA |
| Di Noia | 2020 | Cliniche Humanitas Gavazzeni | Italy | Case report | 1 | 53 | 1 | NA | NA | NA | NA | NA | NA | NA |
| Guerini | 2020 | Università degli Studi di Brescia | Italy | Case report | 1 | 75 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 |
| da Costa | 2020 | Brazil | Case report | 1 | 66 | 1 | 1 | NA | NA | NA | NA | NA | NA | |
| Yekedüz | 2020 | Turkey | Case report | 1 | 75 | 1 | NA | 1 | 1 | 0 | 0 | 1 | 1 | |
| Szabados | 2020 | UK | Case series | 4 | 64.5 | 4 | 2 | 4 | 1 | 0 | 0 | 0 | 0 | |
| Bersanelli | 2020 | 82 Italian centers | Italy | Case series | 3 | 71.7 | 3 | 3 | 2 | NA | NA | NA | 2 | 1 |
| Grover | 2020 | USA | Case report | 1 | 54 | 0 | NA | NA | NA | NA | NA | NA | NA | |
| Wu | 2020 | Zhongnan Hospital of Wuhan University and the Tongji Hospital of Huazhong University of Science and Technology | China | Case series | 11 | 56 | 8 | 5 | NA | NA | NA | NA | NA | NA |
| Smith | 2021 | Baylor College of Medicine | USA | Case report | 1 | 23 | 0 | NA | NA | NA | NA | NA | NA | NA |
HTN = hypertension; DM = diabetes; CKD = chronic kidney disease; CVA = cerebrovascular accident.
Table 2.
Outcomes summary.
| Outcome | No. of Studies | Estimate | 95% CI | Heterogeneity: I2, p-Value | Egger Test (p-Value) |
|---|---|---|---|---|---|
| Steroid use | 14 | 51.36% | 34.99–67.44 | 0%, p = 0.757 | p = 0.6754 |
| Antiviral use | 10 | 62.10% | 41.04–79.41 | 0%, p = 0.5467 | p = 0.1625 |
| Antibiotics use | 13 | 57.12% | 37.03–75.10 | 0%, p = 0.9824 | p = 0.0017 |
| Convalescent plasma use | 8 | 26.48% | 10.59–52.28 | 0%, p = 0.9470 | NA |
| Prophylactic anticoagulant use | 10 | 41.90% | 21.35–65.72 | 0%, p = 0.7297 | p = 0.6215 |
| Antibody treatment | 6 | 0% | NA | NA | NA |
| Readmission to hospital | 5 | 0% | NA | NA | NA |
| ER visit | 9 | 40.75% | 19.16–65.95 | 0%, p = 0.8221 | NA |
| COVID-19–related mortality | 19 | 39.73 | 26.32–54.87 | 0%, p = 0.9077 | p = 0.7214 |
| Airway problem | 9 | 27.28% | 11.79–51.30 | 0%, p = 0.8272 | NA |
| Pulmonary complication | 10 | 40.41% | 21.81–62.25 | 0%, p = 0.5596 | |
| Need for ventilator | 11 | 34.92% | 17.34–57.86 | 0%, p = 0.7252 | p = 0.0030 |
| Need for tracheostomy | 9 | 0% | NA | NA | NA |
| Thrombo-embolic event | 8 | 0% | NA | NA | NA |
| Opportunistic infection | 9 | 29.45% | 12.84–54.18 | 0%, p = 0.8681 | NA |
Table 3.
Meta-regression of COVID-related mortality.
| Variable | No. of Studies | Beta ± SE | p-Value |
|---|---|---|---|
| Mean age | 18 | −0.0073 ± 0.0211 | 0.7300 |
| Male sex | 19 | 0.0034 ± 0.0089 | 0.7009 |
| Respiratory disease | 7 | 0.0220 ± 0.0128 | 0.0861 |
| History of smoking | 10 | 0.0078 ± 0.0114 | 0.4917 |
| Diabetes | 5 | 0.0166 ± 0.0189 | 0.3813 |
| Hypertension | 6 | 0.0131 ± 0.0144 | 0.3634 |
| Dyslipidemia | 5 | −0.6263 ± 0.7086 | 0.3768 |
| Chronic kidney disease | 5 | −0.6263 ± 0.7086 | 0.3768 |
| Cerebrovascular accident | 6 | 0.0236 ± 0.0178 | 0.1858 |
| Previous cancer treatment | 8 | 0.0043 ± 0.0121 | 0.7194 |
Results are expressed as β ± standard error, p-value. Positive beta reflects an increase in the event when the frequency of the variable increases, while negative beta reflects a decrease in the event with the increase in the frequency of the variable. SE = standard error.
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Kamal, M.; Baudo, M.; Joseph, J.; Geng, Y.; Qdaisat, A. Clinical Outcomes after Immunotherapies in Cancer Setting during COVID-19 Era: A Systematic Review and Meta-Regression. Reports 2022, 5, 31. https://doi.org/10.3390/reports5030031
AMA Style
Kamal M, Baudo M, Joseph J, Geng Y, Qdaisat A. Clinical Outcomes after Immunotherapies in Cancer Setting during COVID-19 Era: A Systematic Review and Meta-Regression. Reports. 2022; 5(3):31. https://doi.org/10.3390/reports5030031
Chicago/Turabian StyleKamal, Mona, Massimo Baudo, Jacinth Joseph, Yimin Geng, and Aiham Qdaisat. 2022. "Clinical Outcomes after Immunotherapies in Cancer Setting during COVID-19 Era: A Systematic Review and Meta-Regression" Reports 5, no. 3: 31. https://doi.org/10.3390/reports5030031
