Publications by authors named "Usha Mallya"

Objective: Rare genetic diseases of obesity typically present with hyperphagia, a pathologic desire to consume food. Cost-utility models assessing the value of treatments for these rare diseases will require health state utilities representing hyperphagia. This study estimated utilities associated with various hyperphagia severity levels.

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Article Synopsis
  • Bardet-Biedl syndrome (BBS) is a rare genetic disorder characterized by obesity and uncontrollable hunger (hyperphagia), significantly affecting the lives of caregivers.
  • A survey conducted across the US, UK, Canada, and Germany involved 242 caregivers, revealing extensive caregiver burden that impacts their mood, sleep, relationships, and work productivity due to the demands of caring for individuals with BBS.
  • Caregivers reported high personal and family strain along with substantial financial costs, indicating the need for more effective weight management strategies and support resources for those affected by BBS.
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Article Synopsis
  • Bardet-Biedl syndrome (BBS) significantly impacts both patients and their caregivers, particularly through hyperphagia, which contributes to early-onset obesity and various emotional and physical challenges.
  • The CAREgiver Burden in BBS (CARE-BBS) study surveyed 242 adult caregivers, revealing common behaviors like food negotiation and overnight food-seeking in patients, as well as notable negative effects on mood, sleep, and school attendance.
  • Results indicated that obesity greatly harms aspects of life such as physical comfort, body esteem, and social interaction, with a substantial portion of patients missing school frequently due to their symptoms.
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Introduction: Bardet-Biedl syndrome (BBS) is a rare genetic disease associated with hyperphagia, a pathologic insatiable hunger, due to impaired signaling in the melanocortin-4 receptor (MC4R) pathway. The impact of hyperphagia on the lives of patients with BBS and their families has not been fully characterized.

Methods: Patients with BBS or their caregivers who participated in clinical trials of the MC4R agonist setmelanotide (NCT03013543 and NCT03746522) were included in this qualitative study.

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Article Synopsis
  • Bardet-Biedl syndrome is a rare genetic disorder causing severe obesity and hyperphagia, and its impact on quality of life has not been well studied.
  • In a Phase 3 trial of 52 weeks of setmelanotide treatment, both children and adults showed significant improvements in health-related quality of life, as measured by the PedsQL for kids and the IWQOL-Lite for adults.
  • The results indicated that after treatment, children had a mean improvement of +11.2 in PedsQL scores, while adults had a mean improvement of +12.0 in IWQOL-Lite scores, with notable correlations found between quality of life and changes in body weight and BMI.
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Purpose: Multiple biologics are available for moderate to severe asthma. Given the important relationship between patient engagement in healthcare decision-making and health outcomes, patient preference is an increasingly important consideration. This study elicited patients' preferences for attributes of biologic therapies for moderate to severe asthma.

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Introduction: While the efficacy of dupilumab for the treatment of adults with moderate-to-severe atopic dermatitis (AD) has been demonstrated in several clinical trials, patients in such trials may not necessarily reflect the real-world clinical practice setting. This study evaluated the real-world effectiveness of dupilumab in adults with moderate-to-severe AD based on physician global assessment, percent body surface area affected, and patient-reported itch.

Methods: From Modernizing Medicine's Electronic Medical Assistant dermatology-specific electronic medical records, adults (≥ 18 years) were identified with a diagnosis of AD and ≥ 1 dupilumab prescription (index event) between 1 April 2017 and 31 January 2019.

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Context: Rare homozygous or biallelic variants in , , and can disrupt signaling through the melanocortin-4 receptor (MC4R) pathway, resulting in hyperphagia and severe early-onset obesity. In pivotal Phase 3 clinical trials, treatment with the MC4R agonist setmelanotide reduced hunger and weight in patients with obesity due to proopiomelanocortin (POMC), proprotein convertase subtilisin/kexin type 1 (PCSK1), or leptin receptor (LEPR) deficiency.

Objective: To characterize the historical weight trajectory in these patients.

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Introduction: In patients with pro-opiomelanocortin (POMC) or leptin receptor (LEPR) deficiency, managing obesity and hyperphagia can be burdensome for patients and caretakers. The impacts on health-related quality of life are under-recognized and are not well characterized.

Methods: We conducted in-depth qualitative interviews in patients with POMC (n = 3) and LEPR (n = 2) deficiencies participating in an ongoing open-label extension of phase 3 clinical trials with the melanocortin receptor 4 agonist setmelanotide to describe the patient experience of hyperphagia and characterize changes following treatment with setmelanotide.

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Introduction: Individuals with proopiomelanocortin (POMC) or leptin receptor (LEPR) deficiency are young and experience severe obesity, hyperphagia, and comorbidities, which can impair quality of life (QOL).

Methods: Two pivotal Phase 3 trials explored the effect of setmelanotide on body weight and hunger in individuals with obesity due to POMC (NCT02896192) or LEPR (NCT03287960) deficiency. QOL and depression were investigated in parallel using the disease-specific, age-appropriate Impact of Weight on Quality of Life-Lite (IWQOL-Lite), Pediatric Quality of Life Inventory (PedsQL), and Patient Health Questionnaire-9 (PHQ-9).

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Importance: Clinical trial populations may not reflect clinical practice: knowledge generated in other settings can inform clinical decision-making.

Objective: To evaluate self-reported disease control and quality of life after initiating dupilumab treatment in patients with atopic dermatitis (AD) in the the clinical setting.

Design, Setting, And Participants: This cohort study using an online survey administered prior to (baseline) and at 1, 2, 3, 6, 9, and 12 months after dupilumab initiation included adults with moderate-to-severe AD who initiated treatment with dupilumab through the US patient support program and agreed to participate in the study.

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Background: Patients with atopic dermatitis (AD) are considered at increased risk of developing other type 2 inflammatory diseases. However, real-world evidence based on large commercially insured pediatric populations in the United States is scarce.

Objective: To use a large claims database (IBM MarketScan 2013-2017) in the United States to assess prevalence and incidence of type 2 inflammatory diseases in pediatric patients with AD.

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Background: An estimated 50% of children in the US are Medicaid-insured. Some of these patients have poor health literacy and limited access to medications and specialty care. These factors affect treatment utilization for pediatric patients with atopic dermatitis (AD), the most common inflammatory skin disease in children.

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Background: The real-world persistence with dupilumab therapy for atopic dermatitis (AD) is unknown.

Objective: To characterize adults with AD who initiated dupilumab and evaluate persistence with dupilumab therapy.

Methods: This retrospective cohort study used the IBM MarketScan Commercial and Medicare database.

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The Atopic Dermatitis Control Tool (ADCT) was designed to evaluate patient-perceived AD control and facilitate patient-physician discussion on long-term disease control. The study was performed in adult patients with AD. Development of the ADCT followed US Food and Drug Administration (FDA) guidelines on patient-reported outcome measures (PROMs).

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Background: The Atopic Dermatitis Control Tool (ADCT©) is a brief patient self-administered instrument designed and validated to assess atopic dermatitis (AD) control; six AD symptoms and impacts are evaluated over the past week, including overall severity of symptoms, days with intense episodes of itching, intensity of bother, problem with sleep, impact on daily activities, and impact on mood or emotions. This study assessed the reliability, validity, and responsiveness of the ADCT in a longitudinal context, and provided thresholds to identify meaningful within-person change.

Methods: Data were from a prospective, longitudinal patient survey study of real-world effectiveness of dupilumab in patients with AD.

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Background: Real-world evidence on treatment patterns of pediatric patients with atopic dermatitis (AD) is sparse.

Objective: To assess current treatment patterns in pediatric AD patients.

Methods: Retrospective observational analysis of commercial insurance and Medicaid administrative claims data (January 2011-December 2016) for pediatric AD patients, stratified by age and provider type.

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Purpose: Treatment outcomes and direct medical costs were examined, from a US health payer perspective, of monotherapy with sarilumab 200 mg subcutaneous (SC) every 2 weeks (Q2W) vs adalimumab 40 mg SC Q2W/QW in adult patients with moderately to severely active rheumatoid arthritis who are intolerant of, inadequate responders to, or considered inappropriate candidates for continued methotrexate treatment.

Patients And Methods: Short-term analysis was based on 24-week wholesale acquisition costs of drugs and treatment response observed in the MONARCH Phase III trial (NCT02332590) per American College of Rheumatology (ACR) 20/50 criteria and European League Against Rheumatism (EULAR) Moderate/Good Disease Activity Score 28-joint count erythrocyte sedimentation rate. Long-term analysis, which also considered drug administration and routine care costs, was conducted via a 6-month decision tree and a 1- to 10-year Markov model with microsimulation of patient profiles from the MOBILITY Phase III trial (NCT01061736).

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At the time of this study, prior to the introduction of biologics in the US, systemic therapies used for the treatment of moderate-to-severe atopic dermatitis included off-label immunosuppressants and corticosteroids. Immunosuppressant therapy is associated with a substantial risk of side-effects, therefore needing clinical monitoring, and is likely to incur a significant healthcare burden for patients and payers. This retrospective cohort study based on claims data measured immunosuppressant use and its associated burden among US adult patients with atopic dermatitis covered under commercial or Medicare Supplemental insurance from January 01, 2010, to September 30, 2015.

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Two proprotein convertase subtilisin-kexin type 9 (PCSK9) inhibitors are approved for patients with atherosclerotic cardiovascular disease or heterozygous familial hypercholesterolemia who require additional low-density lipoprotein cholesterol (LDL-C) lowering. This retrospective study sought to determine differences between eligible patients who were prescribed and those who were not prescribed a PCSK9 inhibitor. Patients from an electronic medical record database were included in the analysis, and their demographic, clinical, and treatment characteristics were evaluated.

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Background: Statin therapy is highly efficacious in the prevention of fatal and nonfatal atherosclerotic events in persons at increased cardiovascular risk. However, its long-term effectiveness in practice depends on a high level of medication adherence by patients.

Methods: We identified nondiabetic adults with cardiovascular risk factors between 2008 and 2010 within a large integrated health care delivery system in Northern California.

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Objective: The aim of this study was to assess the budget impact of introducing the proprotein convertase subtilisin/kexin type 9 inhibitors (PCSK9i) alirocumab and evolocumab to market for the treatment of adults with heterozygous familial hypercholesterolemia or clinical atherosclerotic cardiovascular (CV) disease requiring additional lowering of low-density lipoprotein cholesterol (LDL-C).

Methods: A 3-year model estimated the costs of lipid-modifying therapy (LMT) and CV events to a hypothetical US health plan of 1 million members, comparing two scenarios-with and without the availability of PCSK9i as add-on therapy to statins. Proportions of patients with uncontrolled LDL-C despite receiving statins, and at risk of CV events, were estimated from real-world data.

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Background: Although statins are considered safe and effective, they have been associated with statin intolerance (SI) in clinical and observational studies.

Objective: The objective of this study was to describe the clinical and economic consequences of SI through comparison of an SI cohort of patients with matched controls.

Methods: This study used data extracted from an integrated health system's electronic health records from 2008 to 2014.

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Introduction: The National Lipid Association Statin Intolerance (SI) Panel recognized the need for better understanding of the patient SI experience.

Objective: The objective of this research was to develop a patient-reported outcome (PRO) questionnaire to assess a patient's experience with SI.

Methods: Questionnaire development was informed via a series of research activities: literature review, concept elicitation, item generation, and content evaluation.

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Objectives: To develop and validate algorithms to define statin intolerance (SI) in an administrative database using electronic medical records (EMRs) as the reference comparison.

Methods: One thousand adults with one or more qualifying changes in statin therapy and one or more previous diagnoses of hyperlipidemia, hypercholesterolemia, or mixed dyslipidemia were identified from the Henry Ford Health System administrative database. Data regarding statin utilization, comorbidities, and adverse effects were extracted from the administrative database and corresponding EMR.

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