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tumor treating fields for meso - anybody actually using these or is it mostly hype

Veteran · · 3,583 views
So my wife got diagnosed with stage II pleural meso back in June, had her pleurectomy in August and recovery's been solid. Doc mentioned ttfields as a follow-up option and honestly I don't know enough about it to know if we should be pushing for it or if it's just something they throw out there.

From what I've read it sounds like they're these electrode patches you wear that send electrical pulses through the tumor area. Makes sense in theory I guess but I'm not seeing a lot of people actually talking about using it for meso specifically. Lot of lung cancer stuff online but that's different.

Does anybody here have experience with it. Is it something worth pursuing or should we be looking at chemo instead. Navy taught me to do the research before you commit to anything and I'm still trying to figure out what the actual evidence is for this thing with meso patients.

10 Replies

Family
Joe's doing the immunotherapy route and honestly we haven't gone the ttfields direction, but I'd say push your doc for specifics on how many meso patients they've actually seen it work for. That's the question I'd be asking if we were earlier in treatment.
Medical Expert Response
What Angela said about pushing for specifics is so right, and I'd add one more layer to that. The STELLAR trial is the study you want to look up, it was specifically meso patients using TTFields alongside chemo and the median overall survival numbers were genuinely better than historical comparisons. Not a randomized controlled trial so take that with some salt, but it's not nothing either.

The thing I see families get tripped up on in my work is treating this as either/or. TTFields alongside chemo is actually how it was studied, not as a replacement. So the "should we do this instead of chemo" framing might be worth revisiting with her oncologist.

The practical side that nobody really warns you about... people underestimate the time commitment. Patients are supposed to wear the device like 18 hours a day. I've worked with folks who found that manageable and some who really struggled with it, especially around sleep and skin irritation at the electrode sites. Worth asking her care team specifically about that before committing.
3 found this helpful
Family
My dad's oncologist mentioned it too but honestly the data for stage IV pleural is pretty thin compared to what we have for glioblastoma, and since your wife's stage II that might actually matter more for her prognosis. Worth asking if her tumor markers or histology type make her a good candidate or if they're just offering it as an option.
Family
We did ttfields with my dad after his pleurectomy and honestly the data on it for meso is pretty limited compared to glioblastoma where it's more established, but his oncologist felt it was worth trying alongside maintenance chemo. Might be worth asking your wife's team specifically what their outcomes have been with meso patients rather than just the general efficacy numbers.
Family
My dad's oncologist brought up TTFields too back in September when we were mapping out his palliative approach, though by that point his disease had already progressed pretty far so it wasn't really an option for him anymore. But I did dive into the literature on it because I wanted to understand what was being offered.

The thing is, TTFields (Tumor Treating Fields, the Novocure system) has solid evidence for glioblastoma. That's where the real data is. For mesothelioma specifically it's murkier. There was a trial called STELLAR-1 that looked at TTFields plus chemotherapy versus chemo alone in meso patients, and it showed some benefit but honestly the improvement wasn't dramatic. We're talking like a few months extension in progression-free survival, not a game changer.

What I found is that the decision really depends on where your wife is in her treatment and how she's tolerating things. If she's recovered well from her pleurectomy and chemotherapy is being considered next, TTFields as an add-on might be worth discussing with her oncologist specifically about her stage and pathology type. But it's not a replacement for standard chemo. It's more of a "let's throw everything reasonable at this" kind of thing.

The patches themselves are actually pretty manageable from a quality of life standpoint. You wear them under your clothes, they're not painful, just a consistent mild tingling. The bigger issue is compliance over months because you're wearing them basically all day. That matters.

I'd ask her team for the specific data on TTFields in stage II pleural cases. Not general meso data. Stage matters. And honestly get that second opinion on the whole treatment plan if you haven't already. We did ours at Northwestern in August 2024 and it was worth the drive.
Medical Expert Response
What you're doing right now, actually researching this before committing, that's exactly right. And your wife's situation sounds like it's moving in a really good direction after the pleurectomy.

So here's what I can share from working with meso patients over the years. The TTFields data for pleural meso is real, not just something docs throw out there. The STELLAR trial published results showing median overall survival around 18.2 months when TTFields was added to chemo, which was notably better than historical comparisons for this population. Now that's not a randomized controlled trial, so talk to your oncologist about what it actually means for her specific case.

What I've seen with patients who use it is that the device commitment is genuinely a lot. We're talking 18+ hours a day of wearing those arrays. Some people adapt to it surprisingly well, some find it really disrupts sleep and daily life. One woman in our Thursday afternoon group at Sloan Kettering told us back in March that she basically redesigned her whole daily routine around it and felt okay about that trade-off. Others didn't.

The practical question I'd be sitting with is whether her care team has actually used TTFields with meso patients before, not just read about it. There's a difference. If they haven't, getting to a mesothelioma specialty center for at least a second opinion would probably be worth the trip.

For you personally, caregiver stress in this early post-surgery window is real and tends to get minimized. If it starts feeling like too much to carry alone, talking to someone is worth considering.
2 found this helpful
Veteran
Got diagnosed same month as your wife, June 2025. Had my pleurectomy first week of August so we're pretty close on the timeline. My oncologist at VAMC Norfolk brought up TTFields too and honestly I was skeptical at first, same as you.

What I found is the evidence for meso specifically is thinner than for glioblastoma or lung cancer. The Optune system got approval based on some studies but when I dug into it the meso data wasn't as robust. That said, my doc pulled some research from MD Anderson showing it could help prevent recurrence when combined with chemo, and that made more sense to me than using it solo.

We went with adjuvant chemo first, started that in September. TTFields was presented as something to consider down the road if we needed it. The way I see it, chemo's got decades of track record with meso. TTFields is still relatively new for our specific cancer.

Talk to your wife's oncologist about whether chemo is on the table. If it is, that's probably your baseline. TTFields might be an add-on later depending on how things go. Don't let anyone pressure you into it just because it sounds high-tech. In the Navy we called that "shiny object syndrome" and it kills good decision making.

Your research instinct is solid. Keep pushing questions until you understand what the actual benefit would be for her specific situation.
Family
Joe's oncologist at Moffitt brought up ttfields too, back in November when we were deciding on the immunotherapy route. Honestly we didn't go that direction but not because we thought it was hype, more because of where he was in his treatment timeline and what his scans were showing.

From what we learned talking to the doctors, ttfields has better evidence behind it for glioblastoma than for meso, which I think is why you're seeing more chatter about lung cancer online. The mesothelioma data is still building. That said some centers are definitely using it as part of the treatment plan, usually alongside chemo or immunotherapy rather than instead of it. Your wife's doctor would know better than any of us whether it makes sense for her specific staging and what they saw during surgery.

What helped us was asking for the actual studies, not just the pitch. I'm a retired teacher so I'm used to reading research and separating what sounds good from what the data actually shows. We printed out a couple peer reviewed articles about ttfields in meso patients and went through them at an appointment. Made me feel less like we were just guessing.

The electrode patches themselves are kinda annoying to wear full-time but that's the least of anyone's concerns at this point. If her team thinks it could help, might be worth getting a second opinion from another mesothelioma center just to compare recommendations. We did that with immunotherapy and it really clarified things.

How's your wife doing post-pleurectomy? That recovery period is no joke...
Patient
I'm actually in the research phase myself right now so I've been digging into this pretty heavily. My oncologist at Cleveland Clinic mentioned TTFields as a possibility once I finish evaluating HIPEC surgery, and I wanted to understand what I'm actually looking at before committing to wearing electrode patches for hours every day.

The evidence is honestly thinner for peritoneal meso than it is for pleural, and definitely thinner than for glioblastoma which is where these things got FDA approval first. There was the STELLAR-MESO trial that wrapped up a few years ago looking at TTFields plus chemotherapy versus chemo alone for pleural cases, and the results showed some benefit in progression-free survival but it wasn't like a home run situation. The median PFS improvement was maybe 3-4 months if I'm remembering the numbers right.

What I keep running into is that most of the real world experience people share online is from glioblastoma patients because that's the bigger population. For mesothelioma specifically it's still pretty niche. I've been keeping detailed notes from my appointments and the way my oncologist framed it was essentially that it's an option to discuss but not standard of care the way chemotherapy is. That matters.

Your wife's in a decent position having had the pleurectomy and good recovery. I'd ask her team specifically about the STELLAR-MESO data and whether they've seen actual response in their own pleural patients using it. Get those specifics. Don't settle for "it might help." And honestly get a second opinion on whether chemo should come first or if TTFields makes sense as a concurrent or sequential approach. Different centers approach this differently and it matters.
Veteran
Yeah that's what I'm running into too, the evidence just isn't as solid for meso as it is for glioblastoma. Cleveland Clinic's a good outfit though. Did your oncologist give you any sense of whether they're seeing actual results with meso patients or if it's more of a "we should try everything" situation? My wife's doc seems like he's being straight with us but I can't tell if he's recommending it because the data backs it up or because it's another option in the toolbox.

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