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Patients with myelodysplastic syndromes (MDS) often experience symptoms such as cytogenetic abnormalities, dysplastic hematopoiesis, cytopenias, fatigue, dyspnea, and pain that can impact their health-related quality of life (HRQoL).1,2 Treatment is often focused on mitigating these symptoms, particularly in patients with lower-risk MDS.2,3 Recently, HRQoL has been identified as one of the most relevant patient-reported outcomes and can be an independent prognostic predictor in patients with MDS.1,2
HRQoL assessment in patients with MDS lacks MDS-specific measures.1 Furthermore, most HRQoL assessments carried out recently have been within clinical trials and comparative effectiveness studies, which can be limited by specific patient populations and time points.2 Therefore, using disease-specific HRQoL metrics can be essential to incorporating patient feedback into MDS research.1
Several recent studies have addressed the need of HRQoL assessment in patients with MDS. Below, we summarize the key findings from the recent articles by Efficace et al.1 on clinical utility and validation of the subscales of the QUALMS from the MDS-RIGHT project published in Cancer Medicine, Stojkov et al.2 on determinants of low HRQoL in patients with MDS published in Blood Advances, and Buckstein et al.3 on the burden of red blood cell transfusions in patients with lower-risk MDS and ring sideroblasts published in Leukemia & Lymphoma.
This study was part of the MDS-RIGHT project within the European MDS registry (EUMDS). The Quality of Life in Myelodysplasia Scale (QUALMS) has been applied in centers in the Netherlands, the United Kingdom, Israel, and Austria since January 2017. The QUALMS is administered at study entry, and at 6, 12, 18, and 24 months. The QUALMS includes 33 items that are used for scoring and 5 individual “opt-out” questions that are not scored with other items. It includes three subscales, physical burden (QUALMS-P; 14 items), emotional burden (QUALMS-E; 11 items), and benefit finding (QUALMS-BF; 3 items). A score ranging from 1 to 100 is calculated, with a higher score indicating a better HRQoL. This analysis included 270 patients with a median age of 74.0 years (interquartile range [IQR], 68.0–80.0).
All scores had similar distribution and no floor or ceiling effects were observed (Table 1).
Table 1. Distribution characteristics of the QUALMS*
QUALMS, Quality of Life in Myelodysplasia Scale; QUALMS-BF, benefit finding QUALMS; QUALMS‑E, emotional burden QUALMS; QUALMS-P, physical burden QUALMS; SD, standard deviation. |
|||||||
Scale |
Mean |
SD |
Median |
Min |
Max |
Skew |
Kurtosis |
---|---|---|---|---|---|---|---|
QUALMS-P |
63.10 |
21.80 |
64.29 |
7.14 |
100.00 |
−0.19 |
−0.81 |
QUALMS-E |
69.71 |
19.59 |
70.45 |
4.55 |
100.00 |
−0.50 |
−0.09 |
QUALMS-BF |
50.38 |
25.58 |
50.00 |
0.00 |
100.00 |
−0.22 |
−0.47 |
QUALMS total |
66.22 |
16.31 |
68.18 |
15.15 |
96.97 |
−0.48 |
−0.18 |
Cronbach’s alpha coefficients across 6 (n = 146), 12 (n = 99), 18 (n = 71), and 24 months (n = 36) revealed the QUALMS-P scale had the highest coefficients across each assessment (Figure 1).
Figure 1. Cronbach’s alpha coefficients of the QUALMS over time*
QUALMS, Quality of Life in Myelodysplasia Scale; QUALMS-BF, benefit finding QUALMS; QUALMS-E, emotional burden QUALMS; QUALMS-P, physical burden QUALMS.
*Adapted from Efficace, et al.1
This study used patient data from the EUMDS registry at baseline and at the 6- and 12-month visits. The EQ-5D-3L instrument was used to assess HRQoL, which contains two sections, a descriptive system and a VAS. Patients rank their health state as either no problems, some problems, or extreme problems in terms of mobility, self-care, usual activities, pain/discomfort, and anxiety/depression, which is used to calculate the EQ-5D index. The VAS allows patients to apply a score from 0 to 100 to their overall health state with a higher number indicating a better overall health state. The median overall distribution for the EQ-5D index and the VAS score was used as a cut-off to define low HRQoL. This analysis included 2,205 patients at baseline, 1,861 at the 6-month visit, and 1,506 at the 12-month visit. The median age at baseline was 74 years (IQR, 67– 80).
This comparative observational study used patient data from the Canadian MDS (MDS-CAN) registry. The effect of RBC transfusions on HRQoL was assessed by calculating the RBC dose densities as the cumulative RBC transfusions divided by the number of days until the completion of the EQ-5D. In total, 145 patients with MDS with ring sideroblasts who were IPSS-R very low-, low-, or intermediate-risk were included in the MDS-CAN registry, with a mean age of 73.0 years.
The patient’s voice is recognized as valuable information in both clinical research and practice; however, it can be difficult to quantify this data. Efficace et al.1 provided a successful validation of the QUALMS and the three subscales were established. This scale could help to collect HRQoL data with a specific focus on patients with MDS. Several factors such as sex, KPS, comorbidity burden, Hb count, and transfusion burden influenced HRQoL in a large international population of real-world patients with MDS. Furthermore, there was an association between treatment-related burdens from RBC transfusion factors and HRQoL in patients with lower-risk MDS with ring sideroblasts. Overall, identifying and considering factors that influence HRQoL may improve the quality of care and aid in patient-shared decision making.2 Additionally, incorporating patient-reported outcomes in practice can be helpful in patient counseling, personalized clinical decision-making, and in clinical trial design to identify patients for whom intervention is necessary.2
References
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