Sciatica treatment trial fizzles out after just 2 patients

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: 1. Must be 18-65 years of age, inclusive, at time of signing informed consent 2. At least moderate pain at screening using Patient Global Impression of Severity (PGIS) 3. Diagnosis of lumbosacral radiculopathy (LSR) radiating to or below the knee in a single dermatomal pattern (L4, L5, or S1) with onset of clinical symptoms less than 2 year prior to screening visit 4. Presence of one of the following: a radicular pattern (L4, L5, or S1) of sensory, reflex or strength changes 5. Presence of persistent unilateral radicular pain. Have significant leg pain, numbness, or tingling that causes the patient to alter or change activities. 6. LSR pain with inadequate response to conservative care (non-operative); participants must have tried at least one anti-inflammatory or analgesic medication (for at least 2 weeks at adequate doses) and at least one of the following: Physical therapy, bed rest, chiropractic manipulations, home directed lumbar and/or exercise programs. 7. Lumbar spine MRI images are available after the onset of clinical symptoms and correlate with localization of clinical symptoms. CT is acceptable for patients with contraindication for MRI. 8. Is independent, ambulatory, and can comply with post-treatment evaluations and visits. 9. Voluntary signature of the IRB approved Informed Consent Exclusion Criteria: 1. Untreated underlying psychological conditions (e.g. depression, chronic pain syndrome, etc.) as a contributor of pain 2. Bleeding disorders 3. Currently taking anticoagulant or immunosuppressive medication 4. Evidence on MRI or CT of recent vertebral fracture or segmental instability (spondylolisthesis) 5. Inflammatory or auto-immune based pathology (e.g. rheumatoid arthritis, systemic lupus erythematosus, psoriatic arthritis, polymyalgia, polymyositis, gout, pseudogout, etc.) 6. Co-existing hip or knee pain localized to the joint structures that may interfere with the participant's ability to participate in the study or interfere with pain assessments 7. Any central canal stenosis with neurogenic claudication (not including foraminal stenosis) with pain present mostly during walking and signs of lumbar stenosis on lumbar spine MRI/CT 8. Has undergone a surgical procedure for back pain (e.g. discectomy, artificial disc replacement, fusion, etc) 9. Presence of spinal cord stimulator 10. Received epidural steroid injection or nerve blocks within the last 2 months 11. Use of chronic opioids 12. Documented history of drug abuse within the last 6 months 13. Use of immunosuppressants, oral or intravenous steroids in the last 3 months 14. Is pregnant 15. Allergy or intolerance to study medication (e.g. lidocaine, etc.) 16. Condition represents a worker's comp case and/or is involved in health-related litigation 17. Presence of clinically significant disease that may interfere with the evaluation of safety and other clinical outcomes in the study 18. Any other condition, that in the opinion of the investigator, would preclude the patient from enrollment.