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Clinical trials and research at Biogen

• 18Clinical trials
• 33Countries

Newest trials

All recruiting trials (18)

• BIIB147 safety and how it behaves in adults with ALS

  This study tests BIIB147 in adults with ALS to see if it is safe and how the body handles it, including early and long-term effects.

  Recruiting at 2 sites Phase 1/2 Biogen · St Louis, Missouri and 1 other locations · NCT07855211

• Felzartamab for Graves’ Disease: See if it helps control thyroids and reduce need for ATDs

  This study tests felzartamab vs placebo in adults with Graves’ disease to see if it can normalize thyroid hormones and let people stop anti-thyroid drugs.

  Recruiting at 14 sites Phase 2 Biogen · Glendale, Arizona and 13 other locations · NCT07722546

• Safety test of a single dose of BIIB144 in healthy adults

  This first-in-human study will test a single dose of BIIB144 in healthy adults 18–55 to see if it is safe and how the body handles it compared with a placebo.

  Recruiting Phase 1 Biogen · Las Vegas, Nevada · NCT07662148

• Salanersen (BIIB115) for improving movement in people 15–60 with spinal muscular atrophy who are treatment‑naïve or previously on risdiplam

  This trial tests whether salanersen helps movement and is safe for people aged 15 to 60 with spinal muscular atrophy who are either new to treatment or have taken risdiplam.

  Recruiting at 3 sites Phase 3 Biogen · Palo Alto, California and 2 other locations · NCT07444476

• Salanersen after early gene therapy in babies with SMA

  This study tests whether adding salanersen (BIIB115) after early gene therapy with Onasemnogene abeparvovec helps babies with SMA.

  Recruiting Phase 3 Biogen · Flower Mound, Texas · NCT07444450

• Tracking postpartum depression symptoms after starting zuranolone

  This study will see how postpartum depression symptoms change in people who start taking zuranolone within a year after giving birth.

  Recruiting Biogen · Cambridge, Massachusetts · NCT07398469

• Long-term safety monitoring of tofersen (Qalsody) in people with SOD1 ALS

  This project will see how safe tofersen (Qalsody) is over time in people with ALS caused by SOD1 mutations by collecting health information without changing their care.

  Recruiting Biogen · Boston, Massachusetts · NCT07259980

• Safety and how the body processes BIIB145 in healthy adults

  This trial will test whether BIIB145 is safe and how the body absorbs, metabolizes, and clears it in healthy adults, including whether food changes those effects.

  Recruiting Phase 1 Biogen · Austin, Texas · NCT07225517

• Salanersen given before symptoms to help movement in babies with genetic SMA

  This study will try salanersen in newborns with genetically confirmed SMA who have 2 or 3 copies of SMN2 to see if starting treatment before symptoms prevents or lessens movement problems.

  Recruiting at 14 sites Phase 3 Biogen · Chicago, Illinois and 13 other locations · NCT07221669

• Felzartamab infusions for adults with kidney transplants and late isolated microvascular inflammation

  This study will try felzartamab infusions in adults with kidney transplants who developed late isolated microvascular inflammation to see if the inflammation goes away after 24 weeks.

  Recruiting at 53 sites Phase 2 Biogen · Loma Linda, California and 52 other locations · NCT07219043

• BIIB142 safety and how the body handles it in healthy adults 18 to 55

  This study will test whether BIIB142 is safe and how the body processes it in healthy adults aged 18 to 55.

  Recruiting Phase 1 Biogen · Las Vegas, Nevada · NCT07133828

• Felzartamab infusions for adults with primary membranous nephropathy

  This study tests whether felzartamab infusions help adults with primary membranous nephropathy reach complete remission of proteinuria compared with tacrolimus.

  Recruiting at 116 sites Phase 3 Biogen · Huntsville, Alabama and 116 other locations · NCT06962800

• Effects of Felzartamab on Adults with Immunoglobulin A Nephropathy

  This study is testing if felzartamab infusions can help adults with immunoglobulin A nephropathy reduce protein in their urine and improve kidney function.

  Recruiting at 251 sites Phase 3 Biogen · Little Rock, Arkansas and 264 other locations · NCT06935357

• Health effects of omaveloxolone taken during pregnancy or breastfeeding in people with Friedreich's Ataxia

  See if taking BIIB141 (omaveloxolone) during pregnancy or while breastfeeding affects the health of people with Friedreich's Ataxia and their babies.

  Recruiting Biogen · Morrisville, North Carolina · NCT06628687

• Long-term safety assessment of omaveloxolone in Friedreich's Ataxia patients

  This study is testing the long-term safety of the drug omaveloxolone in people with Friedreich's Ataxia to see if it causes any serious side effects like liver problems or heart issues.

  Recruiting at 5 sites Biogen · Los Angeles, California and 13 other locations · NCT06623890

• Understanding how nusinersen is processed in the body using a new delivery system for spinal muscular atrophy

  This study is testing a new way to deliver the medication nusinersen for spinal muscular atrophy to see how it works in the body compared to the usual method.

  Recruiting at 19 sites Phase 1 Biogen · Phoenix, Arizona and 20 other locations · NCT06555419

• Evaluating pregnancy outcomes in women with spinal muscular atrophy exposed to Spinraza

  This study is trying to see how pregnancy goes for women with spinal muscular atrophy who have used Spinraza, compared to women without the condition who haven't used the drug.

  Recruiting at 13 sites Biogen · Palo Alto, California and 13 other locations · NCT05789758

• Registry to assess pregnancy outcomes in women with multiple sclerosis exposed to Vumerity

  This study is trying to see if taking a medication called Vumerity during early pregnancy affects the health of babies born to women with multiple sclerosis compared to those who didn't take it or took other treatments.

  Recruiting at 8 sites Biogen · Aurora, Colorado and 7 other locations · NCT05658497

Quick answers

How many clinical trials run by Biogen are recruiting right now?

18, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.

Where are these trials running?

In 33 countries. The most sites are in United States (18 trials), Australia (5 trials), Germany (5 trials), Brazil (4 trials), China (4 trials). Each study page lists its sites and which ones are recruiting.

What phases are they in?

Phase 3: 5, Phase 1: 4, Phase 2: 2, Phase 1/2: 1. Trials with no phase listed are usually device, behavioural or observational studies.

How do I join one?

Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.

Find the studies that fit you

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