Key publications
Muthukumar M, Desai K, Abogunrin S, Harrower T, Gabriel S, Dinet J (2017). Cost-effectiveness analysis of abobotulinumtoxinA for the treatment of cervical dystonia in the United Kingdom.
Clinicoecon Outcomes Res,
9, 211-229.
Abstract:
Cost-effectiveness analysis of abobotulinumtoxinA for the treatment of cervical dystonia in the United Kingdom.
BACKGROUND: Cervical dystonia (CD) involves painful involuntary contraction of the neck and shoulder muscles and abnormal posture in middle-aged adults. Botulinum neurotoxin type a (BoNT-A) is effective in treating CD but little is known about its associated cost-effectiveness. OBJECTIVE: to evaluate the cost-effectiveness of abobotulinumtoxinA for treating CD from the UK payer perspective. METHODS: a Markov model was developed to evaluate the cost-effectiveness of abobotulinum-toxinA versus best supportive care (BSC) in CD, with a lifetime horizon and health states for response, nonresponse, secondary nonresponse, and BSC in patients with CD (mean age: 53 years; 37% male). Clinical improvement measured using Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) was mapped to utility using data from a randomized trial of abobotulinumtoxinA. Health care resource use, costs, and other inputs were from the British National Formulary, Personal Social Services Research Unit, published literature, or expert opinion. Costs and outcomes were discounted at 3.5% per annum. RESULTS: in the base case, the incremental lifetime quality-adjusted life-years (QALYs) gained from abobotulinumtoxinA arm versus BSC was 0.253 per patient, whereas the incremental cost was £7,160, leading to an incremental cost-effectiveness ratio (ICER) of £30,468 per QALY. One-way sensitivity analyses showed that these results were sensitive to the proportion of responders to abobotulinumtoxinA at first injection, duration between injections, the number of reinjections allowed among primary nonresponders, and any difference in baseline TWSTRS value between the BSC and abobotulinumtoxinA arms. Probabilistic sensitivity analysis showed that abobotulinumtoxinA was cost-effective 46% and 49% of times at thresholds of £20,000 and £30,000 per QALY, respectively. Scenarios are considered including vial-sharing, productivity losses, secondary response/nonresponse at subsequent injections, 5-year time horizon, and alternative reinjection intervals for BoNT-As produced ICERs ranging from cost-saving to £40,777 per QALY, versus BSC. CONCLUSION: AbobotulinumtoxinA was found to be cost-effective in treating adults with CD, at acceptable willingness-to-pay thresholds in the UK.
Abstract.
Author URL.
Publications by category
Journal articles
Gupta S, Muthukumar M, Marvel J, Kaur H, Ishikawa R, Hasani I, Mtibaa M, Olivenstein R (2020). Cost-Effectiveness of Once-Daily Single-Inhaler Indacaterol Acetate/Glycopyrronium Bromide/Mometasone Furoate in Patients with Uncontrolled Moderate-to-Severe Asthma. Value in Health, 23, S723-S724.
Muthukumar M, Kozawa M, Alvares L, Milligan K, Igarashi A (2018). Cost-effectiveness analysis of omalizumab compared with standard of care for severe allergic asthma based on real world evidence in Japan. Value in Health, 21, S104-S105.
Corless S, Alvares L, Kumar P, Muthukumar M, Lesperance S, Katsaounou P (2018). Population health impact of omalizumab over 11 years of use in Ireland in moderate to severe allergic asthma. Value in Health, 21, S405-S405.
Muthukumar M, Desai K, Abogunrin S, Harrower T, Gabriel S, Dinet J (2017). Cost-effectiveness analysis of abobotulinumtoxinA for the treatment of cervical dystonia in the United Kingdom.
Clinicoecon Outcomes Res,
9, 211-229.
Abstract:
Cost-effectiveness analysis of abobotulinumtoxinA for the treatment of cervical dystonia in the United Kingdom.
BACKGROUND: Cervical dystonia (CD) involves painful involuntary contraction of the neck and shoulder muscles and abnormal posture in middle-aged adults. Botulinum neurotoxin type a (BoNT-A) is effective in treating CD but little is known about its associated cost-effectiveness. OBJECTIVE: to evaluate the cost-effectiveness of abobotulinumtoxinA for treating CD from the UK payer perspective. METHODS: a Markov model was developed to evaluate the cost-effectiveness of abobotulinum-toxinA versus best supportive care (BSC) in CD, with a lifetime horizon and health states for response, nonresponse, secondary nonresponse, and BSC in patients with CD (mean age: 53 years; 37% male). Clinical improvement measured using Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) was mapped to utility using data from a randomized trial of abobotulinumtoxinA. Health care resource use, costs, and other inputs were from the British National Formulary, Personal Social Services Research Unit, published literature, or expert opinion. Costs and outcomes were discounted at 3.5% per annum. RESULTS: in the base case, the incremental lifetime quality-adjusted life-years (QALYs) gained from abobotulinumtoxinA arm versus BSC was 0.253 per patient, whereas the incremental cost was £7,160, leading to an incremental cost-effectiveness ratio (ICER) of £30,468 per QALY. One-way sensitivity analyses showed that these results were sensitive to the proportion of responders to abobotulinumtoxinA at first injection, duration between injections, the number of reinjections allowed among primary nonresponders, and any difference in baseline TWSTRS value between the BSC and abobotulinumtoxinA arms. Probabilistic sensitivity analysis showed that abobotulinumtoxinA was cost-effective 46% and 49% of times at thresholds of £20,000 and £30,000 per QALY, respectively. Scenarios are considered including vial-sharing, productivity losses, secondary response/nonresponse at subsequent injections, 5-year time horizon, and alternative reinjection intervals for BoNT-As produced ICERs ranging from cost-saving to £40,777 per QALY, versus BSC. CONCLUSION: AbobotulinumtoxinA was found to be cost-effective in treating adults with CD, at acceptable willingness-to-pay thresholds in the UK.
Abstract.
Author URL.
Alvares L, Kumar P, Muthukumar M, Lesperance S, Katsaounou P (2017). Population Health Impact of Omalizumab over 15 Years of Experience in Moderate to Severe Allergic Asthma. Value in Health, 20(9), A652-A653.
Desai K, Muthukumar M, Abogunrin S, Harrower T, Dinet J, Gabriel S (2015). Abobotulinumtoxin a in the management of cervical dystonia in the United Kingdom: a cost-effectiveness analysis. Value in Health, 18(7), A757-A757.
Publications by year
2020
Gupta S, Muthukumar M, Marvel J, Kaur H, Ishikawa R, Hasani I, Mtibaa M, Olivenstein R (2020). Cost-Effectiveness of Once-Daily Single-Inhaler Indacaterol Acetate/Glycopyrronium Bromide/Mometasone Furoate in Patients with Uncontrolled Moderate-to-Severe Asthma. Value in Health, 23, S723-S724.
2018
Muthukumar M, Kozawa M, Alvares L, Milligan K, Igarashi A (2018). Cost-effectiveness analysis of omalizumab compared with standard of care for severe allergic asthma based on real world evidence in Japan. Value in Health, 21, S104-S105.
Corless S, Alvares L, Kumar P, Muthukumar M, Lesperance S, Katsaounou P (2018). Population health impact of omalizumab over 11 years of use in Ireland in moderate to severe allergic asthma. Value in Health, 21, S405-S405.
2017
Muthukumar M, Desai K, Abogunrin S, Harrower T, Gabriel S, Dinet J (2017). Cost-effectiveness analysis of abobotulinumtoxinA for the treatment of cervical dystonia in the United Kingdom.
Clinicoecon Outcomes Res,
9, 211-229.
Abstract:
Cost-effectiveness analysis of abobotulinumtoxinA for the treatment of cervical dystonia in the United Kingdom.
BACKGROUND: Cervical dystonia (CD) involves painful involuntary contraction of the neck and shoulder muscles and abnormal posture in middle-aged adults. Botulinum neurotoxin type a (BoNT-A) is effective in treating CD but little is known about its associated cost-effectiveness. OBJECTIVE: to evaluate the cost-effectiveness of abobotulinumtoxinA for treating CD from the UK payer perspective. METHODS: a Markov model was developed to evaluate the cost-effectiveness of abobotulinum-toxinA versus best supportive care (BSC) in CD, with a lifetime horizon and health states for response, nonresponse, secondary nonresponse, and BSC in patients with CD (mean age: 53 years; 37% male). Clinical improvement measured using Toronto Western Spasmodic Torticollis Rating Scale (TWSTRS) was mapped to utility using data from a randomized trial of abobotulinumtoxinA. Health care resource use, costs, and other inputs were from the British National Formulary, Personal Social Services Research Unit, published literature, or expert opinion. Costs and outcomes were discounted at 3.5% per annum. RESULTS: in the base case, the incremental lifetime quality-adjusted life-years (QALYs) gained from abobotulinumtoxinA arm versus BSC was 0.253 per patient, whereas the incremental cost was £7,160, leading to an incremental cost-effectiveness ratio (ICER) of £30,468 per QALY. One-way sensitivity analyses showed that these results were sensitive to the proportion of responders to abobotulinumtoxinA at first injection, duration between injections, the number of reinjections allowed among primary nonresponders, and any difference in baseline TWSTRS value between the BSC and abobotulinumtoxinA arms. Probabilistic sensitivity analysis showed that abobotulinumtoxinA was cost-effective 46% and 49% of times at thresholds of £20,000 and £30,000 per QALY, respectively. Scenarios are considered including vial-sharing, productivity losses, secondary response/nonresponse at subsequent injections, 5-year time horizon, and alternative reinjection intervals for BoNT-As produced ICERs ranging from cost-saving to £40,777 per QALY, versus BSC. CONCLUSION: AbobotulinumtoxinA was found to be cost-effective in treating adults with CD, at acceptable willingness-to-pay thresholds in the UK.
Abstract.
Author URL.
Alvares L, Kumar P, Muthukumar M, Lesperance S, Katsaounou P (2017). Population Health Impact of Omalizumab over 15 Years of Experience in Moderate to Severe Allergic Asthma. Value in Health, 20(9), A652-A653.
2015
Desai K, Muthukumar M, Abogunrin S, Harrower T, Dinet J, Gabriel S (2015). Abobotulinumtoxin a in the management of cervical dystonia in the United Kingdom: a cost-effectiveness analysis. Value in Health, 18(7), A757-A757.