Clinical efficacy of nirmatrelvir and ritonavir combination for treating diabetic patients with COVID-19.

The aim of this study was to investigate the clinical efficacy of a combination of nirmatrelvir and ritonavir (NMV-r) for treating COVID-19 in patients with diabetes mellitus (DM). This retrospective cohort study used the TriNetX research network to identify adult diabetic patients with COVID-19 between January 1, 2020, and December 31, 2022. Propensity score matching was used to match patients who received NMV-r (NMV-r group) with those who did not receive NMV-r (control group). The primary outcome was all-cause hospitalization or death during the 30-day follow-up period. Two cohorts comprising 13 822 patients with balanced baseline characteristics were created using propensity score matching. During the follow-up period, the NMV-r group had a lower risk of all-cause hospitalization or death than the control group (1.4% [n = 193] vs. 3.1% [n = 434]; hazard ratio [HR], 0.497; 95% confidence interval [CI], 0.420-0.589). Compared with the control group, the NMV-r group also had a lower risk of all-cause hospitalization (HR, 0.606; 95% CI, 0.508-0.723) and all-cause mortality (HR, 0.076; 95% CI, 0.033-0.175). This lower risk was consistently observed in almost all subgroup analyses, which examined sex (male: 0.520 [0.401-0.675]; female: 0.586 [0.465-0.739]), age (age 18-64 years: 0.767 [0.601-0.980]; ≥65 years: 0.394 [0.308-0.505]), level of HbA1c (<7.5%: 0.490 [0.401-0.599]; ≥7.5%: 0.655 [0.441-0.972]), unvaccinated (0.466 [0.362-0.599]), type 1 DM (0.453 [0.286-0.718]) and type 2 DM (0.430 [0.361-0.511]). NMV-r can help reduce the risk of all-cause hospitalization or death in nonhospitalized patients with DM and COVID-19.

Clinical effectiveness of nirmatrelvir plus ritonavir in patients with COVID-19 and substance use disorders based on real-world data.

This study assessed the clinical efficacy of nirmatrelvir plus ritonavir (NMV-r) in treating patients with coronavirus disease-2019 (COVID-19) and substance use disorders (SUDs). This study included two cohorts: the first examined patients with SUDs, with and without a prescription for NMV-r, while the second compared patients prescribed with NMV-r, with and without a diagnosis of SUDs. SUDs were defined using ICD-10 codes, related to SUDs, including alcohol, cannabis, cocaine, opioid, and tobacco use disorders (TUD). Patients with underlying SUDs and COVID-19 were identified using the TriNetX network. We used 1:1 propensity score matching to create balanced groups. The primary outcome of interest was the composite outcome of all-cause hospitalization or death within 30 days. Propensity score matching yielded two matched groups of 10 601 patients each. The results showed that the use of NMV-r was associated with a lower risk of hospitalization or death, 30 days after COVID-19 diagnosis (hazard ratio (HR), 0.640; 95% confidence interval (CI): 0.543-0.754), as well as a lower risk of all-cause hospitalization (HR, 0.699; 95% CI: 0.592-0.826) and all-cause death (HR, 0.084; 95% CI: 0.026-0.273). However, patients with SUDs had a higher risk of hospitalized or death within 30 days of COVID-19 diagnosis than those without SUDs, even with the use of NMV-r (HR, 1.783; 95% CI: 1.399-2.271). The study also found that patients with SUDs had a higher prevalence of comorbidities and adverse socioeconomic determinants of health than those without SUDs. Subgroup analysis showed that the benefits of NMV-r were consistent across most subgroups with different characteristics, including age (patients aged ≥60 years [HR, 0.507; 95% CI: 0.402-0.640]), sex (women [HR, 0.636; 95% CI: 0.517-0.783] and men [HR, 0.480; 95% CI: 0.373-0.618]), vaccine status (vaccinated <2 doses [HR, 0.514; 95% CI: 0.435-0.608]), SUD subtypes (alcohol use disorder [HR, 0.711; 95% CI: 0.511- 0.988], TUD [HR, 0.666; 95% CI: 0.555-0.800]) and Omicron wave (HR, 0.624; 95% CI: 0.536-0.726). Our findings indicate that NMV-r could reduce all-cause hospitalization and death in the treatment of COVID-19 among patients with SUDs and support the use of NMV-r for treating patients with SUDs and COVID-19.

Efficacy of nirmatrelvir and ritonavir for post-acute COVID-19 sequelae beyond 3 months of SARS-CoV-2 infection.

The effect of nirmatrelvir plus ritonavir (NMV-r) on post-acute COVID-19 sequelae beyond 3 months of SARS-CoV-2 infection remains unknown. This retrospective cohort study utilized data from the TriNetX Research Network. We identified nonhospitalized adult patients with COVID-19 receiving a diagnosis between January 1 and July 31, 2022. Propensity score matching (PSM) was used to create two matched cohorts: NMV-r and non-NMV-r groups, respectively. We measured the primary outcomes using a composite of all-cause emergency room (ER) visits or hospitalization and a composite of post-COVID-19 symptoms according to the WHO Delphi consensus, which also stated that post COVID-19 condition occurs usually 3 months from the onset of COVID-19, during the follow-up period between 90 days after the index diagnosis of COVID-19 and the end of follow-up (180 days). Initially, we identified 12 247 patients that received NMV-r within 5 days of diagnosis and 465 135 that did not. After PSM, 12 245 patients remained in each group. During the follow-up period, patients treated with NMV-r had a lower risk of all-cause hospitalization and ER visits compared with untreated patients (659 vs. 955; odds ratio [OR], 0.672; 95% confidence interval [CI], 0.607-0.745; p < 0.0001). However, the overall risk of post-acute COVID-19 symptoms did not significantly differ between the two groups (2265 vs. 2187; OR, 1.043; 95% CI, 0.978-1.114; p = 0.2021). The reduced risk of all-cause ER visits or hospitalization in the NMV-r group and the similarities in the risk of post-acute COVID-19 symptoms between the two groups were consistent in the subgroups stratified by sex, age, and vaccination status. Early NMV-r treatment of nonhospitalized patients with COVID-19 was associated with reduced risk of hospitalization and ER visits during the period of 90-180 days after diagnosis compared with no NMV-r treatment; however, post-acute COVID-19 symptoms and mortality risk did not differ significantly between the groups.