ObjectiveTo identify the incidence of hypercalcemia and hypocalcemia in zoledronic acid and denosumab groups. Secondary objective was to determine the correlation between calcium supplement and calcium level control.MethodsAn observational retrospective cohort study was conducted by reviewing patient electronic records, laboratory results, and medication charts from 1 August 2015 to 31 July 2016. Adult cancer patients who were diagnosed with bone metastasis secondary to a solid tumor or multiple myeloma and who received either zoledronic acid or denosumab were included. Other indications for bone targeting agents were excluded. Data of bone targeting agents administration encounters were collected, evaluated, and analyzed.ResultsA total of 1141 encounters (for 271 patients) were included. The incidence of hypocalcemia was higher in denosumab compared to zoledronic acid group (5.5% vs. 3.1%, OR = 0.55, 95% CI [0.3–1.0]; P = 0.05). Hypercalcemia incidence was also higher in denosumab group (8.5% vs. 3.1%, OR = 2.9, 95% CI [1.68–5.03]; P < 0.0001). Breast cancer was the most common malignancy associated with hypocalcemia (27.3%) followed by ovarian cancer (25%) and multiple myeloma (22.7%). The risk of developing hypocalcemia was reduced by 16% in patients receiving calcium supplementation (RR = 0.84, 95% CI [0.55–1.20]; P = 0.39).ConclusionDenosumab use was associated with higher rates of both hypercalcemia and hypocalcemia compared to zoledronic acid. Adequate supplementation with calcium substantially reduced the risk of hypocalcemia. Our results highlight the importance of taking preventative measures upon bone targeting agents initiation and during treatment including regular monitoring of calcium levels and providing supplements accordingly.
Background: Microsatellite instability-high (MSI-H) is shown to predict response to the immune checkpoint inhibitors (ICPi). Recently, the FDA granted an accelerated approval for the use of pembrolizumab in any solid tumor and nivolumab in metastatic colorectal cancer in patients with MSI-H. However, the immune-related adverse events (irAEs) exhibit a unique heterogeneous spectrum than conventional chemotherapy adverse drug reactions (ADRs). Underestimating the irAEs could be potentially lethal. Objectives: To evaluate the irAEs; their management, and outcome in MSI-H patients treated with ICPi at the National Center for Cancer Care and Research (NCCCR) in Qatar. Methods: All patients with MSI-H and treated with ICPi at the NCCCR between January 2015 and June 2018 were reviewed retrospectively. Radiologic assessment of irAEs and Naranjo score were used to estimate and confirm the probability of ADRs. Patient demographics, immunotherapy treatment, reported irAEs, and their management were collected. Results: Of the total cohort of patients receiving ICPIs; 9 patients with MSI-H were identified; all received pembrolizumab. 45% (n=4) of the patients were still actively on treatment; 22% (n=2) received only 1 dose then passed away; 22 % (n=2) discontinued because of disease progression; and 11% (n=1) of the patients received 2 cycles as neoadjuvant treatment. To the best of our knowledge, this is the biggest cohort of cancer patients with MSI-H in the Middle East. Calculated Naranjo score was 7 in 45% of the patients (n=4) and 5 in 22 % of patient (n=2), which indicates a probable ADR. 34% of the patients (n=3) did not experience ADRs till the date of data cutoff. 8 irAEs were seen in 67% (n=6) of the patients (Table 1). Based on laboratory or radiologic confirmation, 87.5% (n=7) were irAEs and 12.5% (n=1) was not related to pembrolizumab. Laboratory findings confirmed 25% of the ADRs and radiologic findings confirmed 75% of the ADRs. Of those who developed irARs, 3 patients required a hold of treatment, 1 needed monitoring, and 2 required pharmacologic interventions. There was one patient who received empirical pharmacologic intervention at which evaluation showed no relation to immunotherapy. Conclusion: irAEs can sometimes be unpredictable, rare, and often missed. Frequent monitoring and early management of these suspected or confirmed adverse effects is life saving and should be done in a multidisciplinary approach.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.