Nevro Delivers Long-Term Relief with High-Frequency Spinal Cord Stimulation: 24-Month Data Demonstrates Profound Improvements for Non-Surgical Refractory Back Pain

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Nov 20, 2023, 07:00 ET

Data Published in Journal of Neurosurgery: Spine Highlight Lasting Pain Relief, Enhanced Function, Quality of Life, and Reduced Opioid Dependency with High-Frequency SCS Therapy

REDWOOD CITY, Calif., Nov. 20, 2023 /PRNewswire/ -- Nevro Corp. (NYSE: NVRO), a global medical device company that is delivering comprehensive, life-changing solutions for the treatment of chronic pain, today announced the publication of new 24-month data from the SENZA Nonsurgical Refractory Back Pain (NSRBP) multicenter randomized controlled trial (RCT) in the Journal of Neurosurgery: Spine.

Acute back pain causes more disability around the world than any other condition^¹ and a quarter of adults in the U.S. report they have experienced back pain within the past three months^² More than 500,000 Americans^³ are living with back pain and either aren't good candidates for it or don't want to have spine surgery^⁴ to treat it, leaving them with few treatment options.

The published 24-month data evaluated outcomes for NSRBP patients treated with Nevro's high-frequency (10 kHz) spinal cord stimulation (SCS) system plus conventional medical management (CMM) versus CMM alone. The data show that patients in the high-frequency SCS arm experienced profound improvements in pain, function, and quality of life, plus reduced opioid use compared to the CMM arm at 24 months. The long-term data provides further evidence of the benefits of high-frequency SCS in managing patients with NSRBP.

"People with NSRBP live with pain that can be both physically and emotionally debilitating, affecting their ability to manage their everyday lives," said principal investigator Dr. Leonardo Kapural, physician and researcher at the Carolinas Pain Institute and Center for Clinical Research. "Patients often turn to unproven treatments – some with potentially significant harms, like opioids – when they feel they've run out of options to reduce their pain. We can see through these data that high-frequency SCS is capable of giving patients the relief, function, and quality of life improvements that many are desperate to find."

The 24-month data demonstrated the following benefits for the 125 patients who received 10 kHz Therapy™ within the RCT:

Pain Relief

81.6% of all patients who received a permanent implant were classified as pain responders (achieved ≥50% pain relief) at 24 months, with 58.4% of patients classified as profound responders who achieved ≥80% pain relief.
The mean back pain (as measured by the visual analog scale VAS) significantly decreased from 7.4 at baseline to 1.9, representing a 5.5-point (74%) decrease from baseline.

Function

Patients reporting a severe level of disability (based on the Oswestry Disability Index, ODI) decreased from 73% at baseline to 26% of patients at 24 months.
75.2% of patients were classified as ODI responders, achieving a ≥10-point improvement in ODI score. This signals improvements in the ability to perform daily living activities.

Quality of Life

Mean EuroQoL-5 Dimension-5 Level (EQ-5D-5L) instrument index score was significantly increased from 0.570 at baseline to 0.766 at three months after implantation. This 0.19-point improvement was maintained at 6, 12, 18, and 24 months after implantation. This score represents ≥2.5 times the minimal clinically important improvement.
High levels of patient satisfaction were recorded at 24 months, with 76% of patients reporting their condition was "better" or "a great deal better" on Patient-Reported Global Impression of Change (PGIC).
Opioid usage was decreased or stopped in 62% percent of patients who were using opioids at baseline, with the mean dose decreasing from 35±39 morphine milligram equivalent (MME) at baseline to 15±35 MME at 24 months.

Safety

No new safety signals were identified during the 24-month follow-up, with most study-related adverse events occurring in the first six months after permanent implantation and no additional serious adverse events beyond the six reported at 12 months.^⁵^,⁶
The observed safety profile is consistent with types and rates of real-world adverse events reported for high-frequency SCS, as well as safety outcomes generally associated with SCS.^⁷

"When patients with chronic low back pain don't improve with conventional therapies and aren't good candidates for spine surgery, it can leave both the patient and their care team feeling frustrated by the lack of options," said study investigator Dr. Naresh P. Patel, associate professor of Neurosurgery and vice chair of the Department of Neurological Surgery at Mayo Clinic in Arizona. "This research demonstrates that high-frequency SCS can address an unmet need to treat the challenging NSRBP patient population, and to see results sustained at 24 months is very encouraging."

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About Nevro
Headquartered in Redwood City, California, Nevro is a global medical device company focused on delivering comprehensive, life-changing solutions that continue to set the standard for enduring patient outcomes in chronic pain treatment. The company started with a simple mission to help more patients suffering from debilitating pain and developed its proprietary 10 kHz Therapy™, an evidence-based, non-pharmacologic innovation that has impacted the lives of more than 100,000 patients globally. Nevro's comprehensive HFX™ spinal cord stimulation (SCS) platform includes a Senza SCS system and support services for the treatment of chronic pain of the trunk and limb and painful diabetic neuropathy.

Senza®, Senza II®, Senza Omnia™, and HFX iQ are the only SCS systems that deliver Nevro's proprietary 10 kHz Therapy. Nevro's unique support services provide every patient with an HFX Coach™ throughout their pain relief journey and every physician with HFX Cloud™ insights for enhanced patient and practice management.

SENZA, SENZA II, SENZA OMNIA, OMNIA, HF10, the HF10 logo, 10 kHz Therapy, HFX, the HFX logo, HFX iQ, the HFX iQ logo, HFX Algorithm, HFX CONNECT, the HFX Connect logo, HFX ACCESS, the HFX Access logo, HFX COACH, the HFX Coach logo, HFX CLOUD, the HFX Cloud logo, RELIEF MULTIPLIED, the X logo, NEVRO, and the NEVRO logo are trademarks or registered trademarks of Nevro Corp. Patents covering Senza HFX iQ and other Nevro products are listed at Nevro.com/patents.

To learn more about Nevro, connect with us on LinkedIn, Twitter, Facebook and Instagram.

*Senza HFX iQ™ uses a fixed set of instructions to provide optimized treatment recommendations that utilize direct patient input from assessments on pain and quality of life measures.

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^¹ Hoy D, March L, Brooks P et al. The Global Burden of Low Back Pain: Estimates from the Global Burden of Disease 2010 Study. Ann Rheum Dis. 2014; 73(6): 968–74.
^² Deyo R A, Mirza S K, Martin B I. Back Pain Prevalence and Visit Rates: Estimates from U.S. National Surveys, 2002. Spine (Phila Pa 1976). 2006; 31(23): 2724–7.
^³ Sources: US Census Bureau; CLBP Market Research; CMS OP Hospital SAF Data 2012–2018. www.neuromodulation.com/failed-back-surgery-syndrome-definition.
^⁴ Chronic back pain patients who are refractory to conventional medical management, have no history of and are not candidates for surgery based on individual preference or surgeon consult
^⁵ Kapural L, Jameson J, Johnson C, et al. Treatment of nonsurgical refractory back pain with high-frequency spinal cord stimulation at 10 kHz: 12-month results of a pragmatic, multicenter, randomized controlled trial. J Neurosurg Spine. Feb 11 2022:1-12. doi:10.3171/2021.12.SPINE211301
^⁶ Eldabe S, Buchser E, Duarte RV. Complications of Spinal Cord Stimulation and Peripheral Nerve Stimulation Techniques: A Review of the Literature. Pain Med. Feb 2016;17(2):325-36. doi:10.1093/pm/pnv025
^⁷ D'Souza RS, Olatoye OO, Butler CS, Barman RA, Ashmore ZM, Hagedorn JM. Adverse Events Associated With 10-kHz Dorsal Column Spinal Cord Stimulation: A 5-Year Analysis of the Manufacturer and User Facility Device Experience (MAUDE) Database. Clin J Pain. Feb 8 2022;38(5):320-327. doi:10.1097/AJP.0000000000001026