Wednesday 15 May 2013

European Approaches To 8% Capsaicin Patch

Today's post from news-medical.net (see link below) talks about increasing the options regarding giving treatment before applying capsaicin or lidocaine based pain patches. As anybody who has tried capsaicin, either in cream form or in high strength patches knows, this stuff can burn and bring its own pain problems. The high strength patches should be applied by a qualified medical person because of the risk of extra pain, especially if the patch is left on for some time (up to 60 minutes) and some people just can't tolerate it. That's why they are taking pre-treatments seriously - thus giving the patient lidocaine cream or Tramadol beforehand to enable better tolerability. The European commission has approved these treatments, although the FDA in the States may take a different view (having disapproved of the patches themselves for so long). That's often the reason for delays in treatments becoming available. When you're using combinations of drugs to treat a problem, every one of those drugs needs to be officially approved in combination with the other. It may take a long time but in general, it's to our benefit to make sure any risks are minimised.


Pre-treatments for peripheral neuropathic pain patch receive European Commision approval
Source: Astellas Pharma Europe Ltd. Published on March 14, 2013 at 7:55 AM 

The European Commission (EC) has approved expanded options for pre-treatment prior to use of QUTENZA (8% capsaicin patch). Before application the patient may now take an oral analgesic, or the treatment area may be pre-treated with a topical anaesthetic.1 The 8% capsaicin patch is the first and only licensed high concentration (8%) capsaicin cutaneous patch for the treatment of peripheral neuropathic pain in Europe.

The EC approval of the 8% capsaicin patch label amendment is valid in all of the 27 European Union Member States plus Iceland, Liechtenstein and Norway. The regulatory submission was supported by data from the LIFT study, which aimed to investigate the use of an oral analgesic as an alternative form of pre-treatment for the 8% capsaicin patch.

In the LIFT study patients were randomised to either application of lidocaine cream (a topical anaesthetic) or tramadol tablets (an oral analgesic), prior to application of the 8% capsaicin patch.2,3 All patients were then treated with the 8% capsaicin patch for 60 minutes and followed up for 7 days to monitor pain scores and tolerability. The primary endpoint of the LIFT study was the proportion of subjects who tolerated 8% capsaicin patch treatment which was defined as a patient using the patch for at least 90% of the intended patch duration. The LIFT study was completed in April 2012 and the results will be presented at The 4th International Congress on Neuropathic Pain (NeuPSIG) in May 2013.

Dr. Arun Bhaskar, Consultant in Pain Medicine, Anaesthesia & Critical Care at The Christie NHS Foundation Trust in Manchester says, “The 8% capsaicin patch has been a useful addition to the management of difficult-to-treat neuropathic pain conditions like post-herpetic neuralgia, HIV neuropathy and chemotherapy-induced neuropathy. This label change will provide greater flexibility to treating clinicians and should enable them to carry out treatment of more patients per session, thus reducing the cost of treatment per patient.”

Anne Hodgkins, Senior Brand Director, Pain Management at Astellas Pharma Europe Ltd commented, “Managing peripheral neuropathic pain is challenging and the individual needs of the patient are paramount when treatment decisions are made. We are committed to ensuring the 8% capsaicin patch is an accessible and convenient treatment option for physicians and patients.”

Conventional therapies for peripheral neuropathic pain can be restricted by factors such as systemic side effects, drug-drug interactions, slow onset of action, the need for titration and multiple daily dosing.4,5,6 The 8% capsaicin patch is designed to act locally on the affected area and has not been associated with the systemic side effects such as sedation and dizziness.4,5,7


References
Astellas Data on File March 2013

EU Clinical Trials Register: www.clinicaltrialsregister.eu/ctr-search/search?query=2010-023258-34 Full Download. Last accessed: November 2012
ClinicalTrials.gov: www.clinicaltrials.gov/ct2/results?term=NCT01416116 Last accessed: November 2012
Backonja M et al. NGX-4010, a high-concentration capsaicin patch, for the treatment of postherpetic neuralgia: a randomised, double-blind study. Lancet Neurol 2008;7(12):1106-12
Simpson DM et al. Controlled trial of high-concentration capsaicin patch for treatment of painful HIV neuropathy. Neurology 2008;70(24):2305-13
O’Connor AB et al. Treatment of neuropathic pain: an overview of recent guidelines. Am J Med 2009;122:S22-32
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National Institute for Health and Clinical Excellence (NICE) Neuropathic Pain: The pharmacological management of neuropathic pain in adults in non-specialist settings. March 2010. Available from:http://www.nice.org.uk/nicemedia/live/12948/47949/47949.pdf Last accessed: November 2012
Gálvez R et al. Cross-sectional evaluation of patient functioning and health-related quality of life in patient with neuropathic pain under standard care conditions. Eur J of Pain 2007;3:244-55
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Hansson P et al. A Swedish prospective observational multicenter study to evaluate efficacy and safety in patients with peripheral neuropathic pain receiving their first Qutenza™ treatment.” Presented at World Congress on Pain, Milan, August 2012 [Abstract PT 422]
Klimes J et al. High concentration (8%) of capsaicin patch: Effectiveness in real clinical practice for treatment of neuropathic pain of non-diabetic etiology in the Czech Republic. Presented at World Congress on Pain, Milan, August 2012 [Abstract PH 107]
Bhaskar A et al. Chemotherapy-induced painful neuropathy: treatment with the capsaicin 8% patch. Presented at European Association for Palliative Care, Norway, June 7 – 9, 2012 [Poster 466]
Bhaskar A et al. Management of neuropathic pain (NP) using the capsaicin 8% patch in patients with cancer. . Presented at European Association for Palliative Care, Norway, June 7 – 9, 2012 [Poster 465]
EU Clinical Trials Register: https://www.clinicaltrialsregister.eu/ctr-search/search?query=E05-CL-3002 Full Download. Last accessed: November 2012
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Wagner T, Roth-Daniek A, Poole C. Reduction In Concomitant Neuropathic Pain (Np) Medication Use After Treatment With The Capsaicin 8% Patch: A Retrospective Analysis. 7th Congress of the European Federation of IASP Chapters (EFIC), September 21-24, 2011. Abstract 469
Dolezal T et al. High concentration capsaicin patch improves quality of life in patients with neuropathic non-diabetic pain. Presented at World Congress on Pain, Milan, August 2012 [Abstract PH 124]
Vocelka M et al. Lower consumption of concomitant pain medication and other resource use after administration of 8% capsaicin patch: Results of the observational study. Presented at World Congress on Pain, Milan, August 2012 [Abstract PH 135]
Knotkova H et al. Capsaicin (TRPV1 agonist) therapy for pain relief: Farewell or revival? Clin J Pain 2008;24(2):142-154
Anand P et al. Topical capsacin for pain management: therapeutic potential and mechanisms of action of the new high-concentration capsaicin 8% patch. Br J Anaesth 2011;107(4):490-502


http://www.news-medical.net/news/20130314/Pre-treatments-for-peripheral-neuropathic-pain-patch-receive-European-Commision-approval.aspx?page=2

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