E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Patients with postoperative or posttraumatic neuropathic chronic cutaneous pain |
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E.1.1.1 | Medical condition in easily understood language |
Patients suffering from skin pain resulting from a trauma of a surgery |
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E.1.1.2 | Therapeutic area | Diseases [C] - Nervous System Diseases [C10] |
MedDRA Classification |
E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
The primary study objective is to evaluate lidocaine patches analgesic efficacy in patients with chronic (present for more than 3 months) postoperative or posttraumatic neuropathic cutaneous pain (PNCCP) in comparison with the situation before therapy (baseline situation) and in comparison with the placebo patches. |
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E.2.2 | Secondary objectives of the trial |
Secondary objectives of this study consist of the evaluation of the effects of the lidocaine 5% patches, in comparison with placebo patches, on quality of life, intensity of neuropathic pain symptomatology, extent of the painful skin area and use of additionnal analgesics. In addition, impression of change (compared to baseline) will be evaluated both by the patient and by the physician. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
-NRS > or = 5 and LANSS < or = 12 (as ca clear sign of severe neuropathic pain);
-Neuropathic pain present for at least 3 months;
-Clinical diagnosis of postoperative or posttraumatic neuropathic cutaneous chronic pain, where the diagnosis is made by the referring doctor and/or study investigator (pain should be clearly related to nerve damage during surgical procedure or trauma in terms of both location and tim of occurence);
-The presence of cutaneous allodynia and/or hyperelgesia in the painful region;
-Most painful skin area should be coverable by a maximum of 3 plasters;
Presence of stable analgesic regimen (no change in this medication during 3 weeks before inclusion into the study);
-Negative urine pregnancy test for women of childbearing potential;
-Willingness of the patient to comply with the procedures of this clinical study, signing of an informed consent form and willingness to not increase the pre-existing analgesics (this is the average therapy in the period of one week prior to the start of the study) during the study period. |
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E.4 | Principal exclusion criteria |
-Age < 18 or > 80;
-Patients not on a stable medication for at least 3 weeks;
-Patients not stable on a TENS treatment during the last 4 weeks, or any other treatment possibly confounding the evaluation of the study results;
-Patients continuing use of any topically applied pain relief compound;
-Pregnant women or lactating;
-Women of chilbearing potential not willing to use an adequate contraception method (all study duration);
-Infection in the painful version;
-Poorly healed or non-healed wound or scar in the painful region;
-Presence of exclusevely negative sensory symptoms (such as hypoesthesia);
-The current presence of another chronic pain syndrome that is clincally more pronounced than the PNCCP and/or the opinion of the study investigator that another chronic pain syndrome is present in the patient which may have a significant impact on the evaluation by the patient of the effect of the study medication on the PNCCP;
-The presence of postherpetic neuralgia;
-The presence of postlamniectomy syndrome namely failed back or neck surgery syndrome with radiculopathy.;
-The presence of another form of neuropathic pain and, in particular, painful sensory peripheral polyneuropathy;
-Clinical suspicion and/or known presence of sensory disturbances present prior to the occurence of the PNCCP, for example in diabetes mellitus, polyneuropathy due to alcohol, radiation, radiotherapy, chemotherapy etc..(except for patients being in remission, having received for more than 2 years no active cancer treatment);
-The presence of neurological disorders such as multiple sclerosis, CVA, spinal and/or brain disorders;
-Known and/or strong suspicion of allergy to the study medication, known skin disorder;
-Patients using steroid therapy;
-History of or present cognitive and/or psychiatric disorder with possible impact on the reporting of the effect of the study medication by the patient;
-Patients with ongoing medication litigation procedures are also excluded;
-Other reasons according to the estimations of the investigator which may put the study subjects at risk or preclude adherence to the trial protocol. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The intensity of the pain is measured on the weighted 11-point Numeric Rating Scale (NRS) will be measured during the screening visit (before topical treatment with lidocaine patches), at the start of the treatment, at every follow-up visits ( after 3 weeks and 8 weeks) and at the final visit (after 12 weeks). |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
NRS will be measured during the screening visit (before topical treatment with
lidocaine patches), at the start of the treatment, at every follow-up visits to the
hospital (after 3 weeks, and 8 weeks) and at the final visit (after 12 weeks) |
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E.5.2 | Secondary end point(s) |
a) Patient Global Impression of Change scale (PGIC) = Subjective experience of change in the intensity of pain
b) Clinician Global Impression of change scale (CGIC) = Experience of change in the intensity of pain as evaluated by the physician
c) Analgesic use is measured in terms of whether there is a reduction in the need of co-analgesics (number of analgesics and daily dose)
d) Leeds Assessment of neuropathic Symptoms and Signs pain scale (LANSS) = Effect of study medication on neuropathic pain
e) Neuropathic Pain Symptom Inventory scale (NPSI) = Detailed information concerning the presence of different neuropathic symptoms
f) EQ-5D standardized questionnaire to measure health outcome
g) Effect of the study medication on cutaneous sensory symptoms as measured by pin prick stimulation, sensory brush, and cold & warm
h) The size of the painful area
i) The average number of patches used on a daily basis
j) Occurrence of side effects
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
a) After 3 weeks, 8 weeks and 12 weeks
b) After 3 weeks, 8 weeks and 12 weeks
c) At day -1, after 3 weeks, 8 weeks and 12 weeks
d) At day -1, after 3 weeks, 8 weeks and 12 weeks
e) At day -1, after 3 weeks, 8 weeks and 12 weeks
f) At day -1, after 3 weeks, 8 weeks and 12 weeks
g) At day -1, after 3 weeks, 8 weeks and 12 weeks
h) At day -1, after 3 weeks, 8 weeks and 12 weeks
i) After 3 weeks, 8 weeks and 12 weeks
j) At day 10, after 3 weeks, 8 weeks and 12 weeks |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | Yes |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | No |
E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.4.1 | Number of sites anticipated in Member State concerned | 10 |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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last visit of the last subject undergoing the trial. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 11 |
E.8.9.1 | In the Member State concerned days | 0 |
E.8.9.2 | In all countries concerned by the trial years | 1 |
E.8.9.2 | In all countries concerned by the trial months | 11 |
E.8.9.2 | In all countries concerned by the trial days | 0 |