DTM Spinal Cord Stimulation 12 Month Study Results Reported by Medtronic

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Summation

  • 1 There was also a difference in the proportion of patients who reported profound back pain relief (>80% reduction in VAS score) favoring DTM SCS (69%) compared with conventional SCS (35.
  • 1 The study met its primary endpoint at three months, and in pre-specified secondary analysis showed the superiority of DTM SCS compared to conventional SCS and has sustained these results at 12 months.
  • At 12 months, 84% of patients with chronic back pain treated with DTM Spinal Cord Stimulation reported at least 50% pain relief, compared to 51% of patients treated with conventional SCS (p=0.

October 20, 2020

DTM Spinal Cord Stimulation: 12 month results from a large, multicenter randomized controlled trial (RCT) that further validate the superiority of DTM™ Spinal Cord Stimulation (SCS) in providing back pain relief, compared with conventional SCS therapy, using the Medtronic Intellis™ platform was announced today by Medtronic.

DTM™ Spinal Cord Stimulation Therapy Using the Medtronic Intellis™ Platform

Back Pain Responder Rate (mITT):

At 12 months, 84% of patients with chronic back pain treated with DTM Spinal Cord Stimulation reported at least 50% pain relief, compared to 51% of patients treated with conventional SCS (p=0.0005).1 There was also a difference in the proportion of patients who reported profound back pain relief (>80% reduction in VAS score) favoring DTM SCS (69%) compared with conventional SCS (35.1%).1 The study met its primary endpoint at three months, and in pre-specified secondary analysis showed the superiority of DTM SCS compared to conventional SCS and has sustained these results at 12 months.

Pain relief was measured by the Visual Analog Scale (VAS), a widely used and accepted measure for pain intensity that records patient-reported pain levels on a scale of 0-10. Fifty-percent pain relief, as measured by VAS, is a recognized industry standard to define therapy success. The majority of DTM SCS patients in this study exceeded this threshold, with seven out of ten experiencing profound back pain relief at 12 months.

Patients treated with DTM SCS also reported an average VAS score reduction of 75% in back pain, compared with 50% treated with conventional SCS. Average VAS scores for patients treated with DTM SCS at 12 months were 1.74 for back pain and 1.45 for leg pain.1 The term remitter has previously been used to classify patients with a pain score of 2.5 or less. As a group, patients in the DTM SCS group clearly fell below this level with a mean VAS score of 1.74 for back pain and 1.4 for leg pain.

“DTM SCS has the potential to improve outcomes for patients with chronic back pain,” said Michael Fishman, M.D., MBA, anesthesiologist, and Interventional Pain Medicine specialist at the Center for Interventional Pain & Spine. “More than two-thirds of the patients in this RCT achieved profound pain relief of at least 80% with DTM SCS therapy. These outcomes demonstrate that DTM SCS can provide more patients profound pain relief compared with conventional SCS at 12 months, which physicians should consider when selecting a neuromodulation therapy for their patients.”

“DTM SCS is based on a novel understanding of how neurons and glial cells contribute to chronic pain,” said Charlie Covert, vice president and general manager of the Pain Therapies business, part of the Restorative Therapies Group at Medtronic. “The 12-month data reported demonstrate the value of Medtronic’s continued focus on pursuing science-based approaches to improving human health and underscore our ability to integrate existing technologies with novel therapies like DTM SCS to improve the outcomes of people suffering from chronic pain.”

Note: The data reported are from an RCT in which SCS patients were randomized to either the treatment or control arm, with 79 subjects implanted and followed over the course of 12 months. The study previously met its primary endpoint of noninferiority compared with conventional SCS at three months, and a prespecified secondary statistical test for superiority showing the difference between DTM SCS and conventional SCS as highly significant. Medtronic previously reported three-month data from the trial in January 2020.


References

  1. Fishman M, Cordner H, et al. DTM™ SCS RCT 12-month Data Results. Presented at a Medtronic webinar, jointly supported by the North American Neuromodulation Society (NANS), World Institute of Pain(WIP), and the American Society for Pain and Neuroscience (ASPN). October 19, 2020. Webinar available on society websites.
  2. Milligan ED, Watkins LR. Pathological and protective roles of glia in chronic pain. Nat Rev Neurosci. 2009 Jan;10(1):23-36.
  3. Vallejo R, Tilley DM, Vogel L, Benyamin R. The role of glia and the immune system in the development and maintenance of neuropathic pain. Pain Pract. 2010 May-Jun;10(3):167-84.
  4. De Leo JA, Tawfik VL, LaCroix-Fralish ML. The tetrapartite synapse: Path to CNS centralization and chronic pain. Pain. 2006; 122:17-21.
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