E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Sciatica is a symptom defined as unilateral, well-localised leg pain, with a sharp, shooting or burning quality, that approximates to the dermatomal distribution of the sciatic nerve down the posterior lateral aspect of the leg, and normally radiates to the foot or ankle. It is often associated with numbness or paraesthesia in the same distribution |
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E.1.1.1 | Medical condition in easily understood language |
Sciatica is pain caused by irritation or compression of the sciatic nerve root, the nerve runs from the back of your pelvis, through your buttocks, down both legs, ending at your feet |
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E.1.1.2 | Therapeutic area | Diseases [C] - Musculoskeletal Diseases [C05] |
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 |
To evaluate the effectiveness of subcutaneous injections of adalimumab plus physiotherapy compared with placebo injection of saline plus physiotherapy for patients with sciatica who have failed first line primary care treatment and been referred to an outpatient physiotherapy clinic. The primary effectiveness outcome will be sciatica related health status using the Oswestry Disability Index. To evaluate the costeffectiveness of subcutaneous injections of adalimumab plus physiotherapy, compared with placebo injection of saline plus physiotherapy for patients with sciatica who have failed first line primary care treatment and been referred to an outpatient physiotherapy clinic, from a health service and personal social care perspective. The primary economic outcome will be the incremental cost per Quality Adjusted Life Year (QALY) gained. QALYs will be estimated by administering the EQ5D5L at each followup visit. |
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E.2.2 | Secondary objectives of the trial |
Secondary effectiveness outcomes will include: pain intensity, location, duration, anticipated trajectory and bothersomeness; general health status; the risk of poor outcome; psychological measures including fear avoidance beliefs, self-efficacy, anxiety and depression; employment status; adverse effects. |
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
• 18 years of age and older; • Clinical features of sciatica • Leg pain worse or as bad as back pain, obtained by asking the participant • Unilateral leg pain approximating a dermatomal distribution, (contralateral buttock pain permitted if it does not extend below the inferior gluteal margin) obtained by asking the participant • And one of the following: o Positive neural tension test such as Straight leg raise test (SLR) restricted <50 degrees by leg pain; positive femoral stretch test, loss of sensation in a dermatomal distribution o Muscle weakness or loss of tendon reflex affecting one myotome • Persistent symptoms for at least 4 weeks and less than six months Persistent symptoms for at least 4 weeks and less than six months despite first line treatment in primary care; obtained by asking the participant • Moderate to high severity (≥30) on Oswestry Disability Index. • Female partners of sexually active men should use adequate contraceptives for at least five months after the last injection. Female patients should have a negative urine pregnancy test within two weeks prior to randomisation, unless they are postmenopausal or have had a sterilisation operation. Sexually active men must also use adequate contraceptive methods. |
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E.4 | Principal exclusion criteria |
• Symptoms persisting for longer than six months obtained by asking the participant; • A previous episode of sciatica in the last six months • Unable to perform MRI (e.g. magnetic metal implants, potential metallic intraocular foreign bodies, claustrophobia, extreme obesity) obtained from the medical records and by asking the participant • Serious spinal pathology, including cauda equina syndrome, malignancy, recent fracture, infection or very large disc prolapse which might require an urgent spinal surgery opinion, identified from participants' previous medical history in their medical records or from magnetic resonance imaging (MRI) • Incidental serious pathology identified by MRI (e.g. adrenal tumour) • Neurological deficit involving muscle weakness requiring an urgent spinal surgery assessment e.g. foot drop • Widespread pain throughout the body including the upper limb (Pain is considered widespread when all of the following are present: pain in the left side of the body, pain in the right side of the body, pain above the waist, and pain below the waist. In addition, axial skeletal pain (cervical spine or anterior chest or thoracic spine or low back) must be present). • Prior use of biological agents targeting TNF alpha within the previous six months obtained from the medical records and by asking participant; • Previous lumbar spinal surgery obtained from the medical records and by asking the participant; • Contraindications to adalimumab injection including serious infection such as active or latent tuberculosis, transplanted organ, demyelinating disorders, malignancy, cardiac failure, low white cell count, pregnancy obtained from the medical records, results of investigations and by asking the participant; • Pregnant or breastfeeding (women must not breastfeed for at least five months after the last adalimumab injection. • Unable to communicate in English or Welsh; unable or unwilling to give informed consent. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary clinical outcome will be back pain specific disability using the Oswestry Disability Index measured at 12 months. The primary economic outcomes will be the incremental cost per QALY gained, estimated by administering the EQ5D5L at each follow up visit. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
The main outcome will be the Oswestry Disability Index for all time points. Participants who need to be referred for disc surgery will be labelled as 'treatment failures' and their last test results prior to surgery will be carried forward in the analysis. The economic analysis will be from the perspective of the NHS and personal social services. Resource use will be measured from routinely collected information, and from patients' self-reporting of resource use, captured by questionnaire. Unit costs for each type of resource will be obtained from standard sources and combined with the resource use information to calculate costs. Quality Adjusted Life Years (QALYs), which are a measure of not only the quantity of life but also its quality, will be calculated from the EQ-5D questionnaire. |
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E.5.2 | Secondary end point(s) |
The secondary outcomes measures are Global assessment of change since baseline, • Anxiety and depression using the Hospital Anxiety and Depression Scale, Employment questions, STarT Back screening tool, Pain trajectory on a single question, • Pain selfefficacy questionnaire and Fear avoidance beliefs using the Tampa Scale of kineKinesiophobia. The secondary economic outcome measure is the Resource Use Questionnaire. |
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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) | Yes |
E.7.4 | Therapeutic use (Phase IV) | No |
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 | No |
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 | 6 |
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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Participants will be followed up for 12 months, 2 weeks after their 12 month questionnaire they will be contacted by telephone for a brief semi-structured interview. |
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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 | 3 |
E.8.9.1 | In the Member State concerned months | 1 |
E.8.9.1 | In the Member State concerned days | 1 |
E.8.9.2 | In all countries concerned by the trial years | 3 |
E.8.9.2 | In all countries concerned by the trial months | 2 |
E.8.9.2 | In all countries concerned by the trial days | 1 |