Are others with GCA and PMR on Tyenne Monthly Infusions?

Posted by julieahp @julieahp, Jan 17 7:13pm

I just joined today, 1/17/26, after having been diagnosed with GCA & PMR in 7/2024. On High dose (60mg) Prednisone for several months, tapering over a year+ to 0 as Tyenne (an Actemra biosimilar) was introduced 9/24. Would love to hear from others on a similar path and any significant experiences.
I had classic jaw claudication & 2 scary vision episodes & more.... No permanent damage. Almost 65, living in Seattle area, work full time+ (necessary), exercise (walk hilly, long distances) as often as I can, anti-inflammatory diet. Still, I worry about relapses (30%) that I've read about even while on Tyenne infusions and rate being higher (50%) if one stops biologic infusions. It worries me that CRP and ESR labs are no longer trusted measurements while one is on Tyenne, although these labs are still drawn & monitored--not sure why if not reliable results. Feel muscle weakness & some upper back & hip pain daily now, whereas it was absent before, but want to balance awareness of it with not overreacting to it--unsure of balance line. I don't let it stop me from previous activity level. Not aware of any treatment that surpasses my Tyenne infusions, nor any new promising treatments in development pipeline now (some shot down).
Kind Regards to All. --Julie

Interested in more discussions like this? Go to the Polymyalgia Rheumatica (PMR) Support Group.

Profile picture for jeff97 @jeff97

@julieahp For what it is worth, I see a rheumatologist and a physician's assistant at the rheumatology office. The PA was like your rheumatologist, and implied that I would need to keep taking Actemra indefinitely. But I saw the rheumatologist at my last appointment, and for the first time in a year and a half, he started talking about the potential end of my treatment. He wants me to keep taking weekly Actemra injections for another few months, to get me through to 2 years of treatment. Then he plans for me to switch to injections every other week for a year, and then stop treatment. Hopefully it will work out that way. I consider my case of GCA to be fairly severe, but my rheumatologist thinks it will be safe to stop treatment after 3 years.

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@jeff97
Hi Jeff, Thanks for sharing this info. It is definitely helpful to have this support group to learn others' experiences and, in an indirect way, have access to other doctors' recommendations to share with our doctors. That 2 years (minimum) seems to be a common expectation. Since they are monitoring liver & kidney (ALT, AST, Creatinine labs, others?), I'm content to let Tyenne beat GCA into submission for awhile (on Tyenne for 17 mos now) and not "rock the boat".
I know we're all rooting for you to stay well after you stop treatment. That would be some fantastic news.

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Profile picture for Mike @dadcue

@jeff97

I have been off Actemra for 6 months when there was a supply shortage during Covid. That was a disaster because a synovial cyst formed on my lumbar spine. When Actemra was restarted the synovial cyst was reabsorbed. For a large synovial cyst to be spontaneously reabsorbed is extremely rare.

I asked artificial intelligence:

"Spontaneous reabsorption or resolution of a synovial cyst (specifically lumbar synovial cysts) is exceedingly rare, with only a few dozen cases documented in medical literature."

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@dadcue
Interesting, Mike! I'll have to google synovial cyst--causes, etc. Hmmm....what all Actemra/Tyenne can do in addition to being prescribed for GCA! (Well, so many things connected/related to any particular disease process...). Just like Tyenne removed my 3 decades of absolutely debilitating migraines, though it is not prescribed for migraines.

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Profile picture for jeff97 @jeff97

@dadcue Actemra is listed in my chart at the rheumatologist's as a high risk drug. Liver damage, serious infections, and bowel perforations seem like good reasons to stop if possible. A person can try stopping and then restart if necessary.

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@jeff97
Hi Jeff,
Yup, side effects listed understood. But ongoing monitoring to prevent/address. And perfectly reasonable to work with doc on stopping & restarting. Years ago, Steve Martin wrote an hilarious satirical piece on listed side effects. I believe them (side effects), but also with a grain of salt for good reasons.

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Profile picture for julieahp @julieahp

@sjc123
Hi @sjc123: Hmmm...my Rheumatologist did not assure me that GCA would resolve. She said that I would likely be on Tyenne for the rest of my life, but did not rule out tweaking dosage schedule at some future point. I must say that I was bummed out to hear that, as initially I was either told or read that I'd be on treatment for about 2 years, depending.....and expecting a remission. That info changed to treating forever. I've been on monthly infusions for 14 months now and weekly injections for 3 months prior to that. (Dx'd PMR/GCA both July 2024.) I was told that I MUST have the injections exactly 4 weeks apart (& only if absolutely necessary, no more than 1-2 days leeway in either direction). Thus, I am already scheduled out every 4 weeks thru December 2026 at Kaiser-Permanente! I'll see what my Rheum says about a flare (symptomatic) and CRP labs (increasing?) while on Tyenne. Perhaps the same thing yours said, but will see. They never do an ESR lab with me, just CRP. They told me that ESR is unnecessary and that only CRP is needed (post diagnosis). I can ask Rheum again about that.

For us all...maybe there will be a scientific breakthrough in the future--who knows?

Hafta add one incredible silver lining for me: Tyenne (& possibly the prednisone prior?) seems to have shut down my killer 3-4-day migraines that I had 1-2x/month for 3 decades! I've only had 2 milder migraines in 17 months. Talk about the gift of time returned!!!

I sure hope that PT helps with your PMR symptoms, or whatever it is that is causing the pain.

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@julieahp I was diagnosed with GCA in July 2025, a few months after I had spine surgery. During my rehab for my surgery I experienced headaches and slight jaw pain. Following that I experienced blurred vision in my right eye. I immediately saw my eve doctor who ran tests and surmized that I had GCA. I was hospitalized for one week where they placed me on 60mg. of predisone and then 2 days of IV steroids. Other tests were run and upon discharge I was placed on lowering doses of prednisone. In September, I started IV infusions of actemra once a month until January of this year.I then started Tyenne injectables once a week. Since starting actemra/tyenne,I have had 3 UTI's.Thank God for my primary dr. because my Rheumatologist doesn't seem to have time to address this issue. Has anyone else been experiencing UTI's while on Actemra/Tyenne?

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Has anyone tried the biologic Simponi Aria? Or because of age just die with it. Tried another biologic and broke out in hives and had a cough. At what age should you accept your fate @dadcue

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Profile picture for marymckeith @marymckeith

Has anyone tried the biologic Simponi Aria? Or because of age just die with it. Tried another biologic and broke out in hives and had a cough. At what age should you accept your fate @dadcue

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@marymckeith

I don't know about my fate. My rheumatologist only told me that I was "too young" to take prednisone for the rest of my life. I was 64 at the time so my rheumatologist thought I had too many years left to be on prednisone. I took prednisone for half of my left already but only 12 years to treat PMR.

I only know when I was still on Prednisone at the age of 64 living to the age of 70 was inconceivable to me. Now I'm almost 72 and still alive. I honestly believe Actemra saved my life. My quality of life when I was on Prednisone was deteriorating but now it is improving since I tapered off Prednisone. I might have cancer though but that isn't confirmed ... just something that "looks suspicious" that was an incidental finding on a CT scan.

Simponi Aria (golimumab) is a TNF-inhibitor biologic indicated for rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, and juvenile idiopathic arthritis, but it is not FDA approved for Giant Cell Arteritis (GCA) or PMR.

TNF inhibitors have generally shown limited success as steroid-sparing agents for Polymyalgia Rheumatica (PMR) and Giant Cell Arteritis (GCA) in controlled trials, despite initial promise in smaller studies.

I actually tried a TNF inhibitor for a few months but it didn't seem to work for me as well as Actemra did. I believe you won't know what will work unless you try it to see.

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Profile picture for julieahp @julieahp

@dadcue
Interesting, Mike! I'll have to google synovial cyst--causes, etc. Hmmm....what all Actemra/Tyenne can do in addition to being prescribed for GCA! (Well, so many things connected/related to any particular disease process...). Just like Tyenne removed my 3 decades of absolutely debilitating migraines, though it is not prescribed for migraines.

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@julieahp

Synovial cysts usually form when chronic inflammation is present.
https://my.clevelandclinic.org/health/diseases/synovial-cyst
--------------------
The synovial cyst I had was starting to cause cauda equina syndrome.
https://pubmed.ncbi.nlm.nih.gov/22996855/

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Clearly we all get varying information from our Rheumy. My GCA is temporal Arteritis vs large vessel vascular, so may that accounts for some difference, but still, lots of variation. My doc says my infusions must be no sooner than two days less than 4 weeks as the insurance will not pay if sooner. But after 4 weeks, there is much more flexibility due to the long half-life of Actemra/Tyenne., and the insurance company is not concerned with infusions over 4 weeks. One time I came for my infusion with a sinus infection, and my doc said to come back for the infusion in a week or so after it cleared up, no problem. Also, once I am off prednisone (maybe two more months), I am to continue infusions for six months, and then we may begin to reduce the amount of the drug over time. It “all depends.”

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Profile picture for vmaynard @vmaynard

@julieahp I was diagnosed with GCA in July 2025, a few months after I had spine surgery. During my rehab for my surgery I experienced headaches and slight jaw pain. Following that I experienced blurred vision in my right eye. I immediately saw my eve doctor who ran tests and surmized that I had GCA. I was hospitalized for one week where they placed me on 60mg. of predisone and then 2 days of IV steroids. Other tests were run and upon discharge I was placed on lowering doses of prednisone. In September, I started IV infusions of actemra once a month until January of this year.I then started Tyenne injectables once a week. Since starting actemra/tyenne,I have had 3 UTI's.Thank God for my primary dr. because my Rheumatologist doesn't seem to have time to address this issue. Has anyone else been experiencing UTI's while on Actemra/Tyenne?

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@vmaynard
Hello. Much empathy for what you've gone through, all of it. I messaged you about UTI prevention, hoping it does help prevent. As you probably know, Actemra/Tyenne renders us immuncompromised, so unable to fight off many infections, particularly respiratory infections. But UTIs are difficult to fight off. Preventing bacteria from going where (or building up) it should not go is more important than ever. Routinely drink lots and lots of plain water (keep your system flushed and not concentrated) and void frequently, even before you feel the urge. UTIs not treated soon enough can lead to sepsis, as you surely know. Some can be "silent" but I'm guessing that most are terribly painful/uncomfortable. I hope you stop getting them and can stay off of antiobiotics.

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