Hi all 😊
I am still around and check in on you all even if I don’t always post. As a lot of you know, my dad had stage IV NSCLC adenocarcinoma diagnosed 2/28/18, low tumor volume, and was held stable until 9/2018 at which time he went into the hospital on 10/16 and heartbreakingly passed on 11/20/18 from leptomeningeal disease brought on by lung cancer. I have since been relentless in trying to figure out what could have happened and why. I have researched, talked to experts and spent countless hours going over everything and I wanted to share some of it with you all and for future people who may stumble upon my posts later on. Maybe it will help someone now or later....
Something that I could never understand was how fast my dad went from stable cancer to leptomeningeal so quickly. It literally seemed like overnight. And what I have found, and what might explain what happened to my dad, is called a “disease flare.” I thought I was prepared and knew a lot to help my dad but I found I was not aware of the potential “disease flare” as a side effect to cancer treatment. And once I learned more about it, it seems to explain what happened to my dad. The biggest issue with a disease flare is rapid metastasis and/or leptomeningeal disease when/if it rapidly flares into the meninges. My dad did not have metastasis, but I believe had a rapid disease flare, once treatment was stopped for radiation, that went straight into the meninges- leptomeningeal disease
So a “disease flare” can be brought on 1-4 months after starting a cancer treatment or as quickly as within 1 week of stopping a cancer treatment to switch treatments. Tagrisso, Gefitinib and some others are ones that also carry the risk for “disease flare”, in which the disease flare can very quickly involve the meninges of the CNS and/or other worsening of cancer symptoms and tumor worsening very quickly. Starting a cancer treatment also carries this risk, whereas 1-4 months after starting a treatment the body, while initially suppressed, ramps up on treatment and experiences a disease worsening rapidly, the “disease flare.”, a burst of activity within. This can also lead to leptomeningeal disease even while on treatment as well, which could be held partially at bay by the treatment until treatment is discontinued. The other way disease flare could show up is having a current treatment stopped, even for a very short time to switch treatments. After the body has been suppressed on treatment, the cessation of treatment can potentially cause the immune system to ramp up, quickly producing a worsening of cancer and potential involvement of the meninges (leptomeningeal) very quickly. Without knowing this possibility, one might keep their symptoms to themselves when in fact they need to go to a doctor and tell them as soon as it happens. This is what I believe happened to my dad. He was on a clinical trial of Pirfenidone pills (9 per day) and Alimta/Carbo, then down to Pirfenidone and Alimta maintenance for stable disease. The Pirfenidone, while only for pulmonary fibrosis which my dad did not have, was thought to act similar to immunotherapy when combined with platinum chemo. On 9/27 his doctor took my dad out of the clinical trial, and stopped the Perfinidone pills that same day, to start radiation on the chest tumor by his heart that was causing the SVC syndrome. It was this move that I believe may have caused a “disease flare” when treatment was stopped completely, and my dad rapidly declined after, after having no worsening of disease being diagnosed just under 8 months prior. The disease flare can also happen commonly after Tagrisso is stopped. My dad was not on Tagrisso, but if such occurs and then disease flare involves rapid leptomeningeal, they are finding Tarceva has helped the disease flare that Tagrisso can potentially cause, for those with EGFR.
This is still relatively low chances of happening, but research suggests the statistical numbers of occurrences are grossly underreported to what the actual true statistics are. In other words, disease flare with or without meninges involvement is much higher.
How could this info help you? I’m hoping it will arm you with the information of knowing this possible potential and while not dwelling on it, just keep it in the back of your mind to watch out for. I didn’t know about “disease flare” cause by starting treatment or stopping treatment, neither did my dad, but hopefully now you all will know about it and file it away as one more piece of knowledge to help make it through your treatment. Should you notice a rapid progression of symptoms after starting treatment or stopping treatment, headaches, vision changes, nerve changes, changes to walking and coordination, rapid tumor spread after starting to stopping treatment, low back pain, or anything that doesn’t feel right, bring to your doctor’s attention. They don’t have to be all at once, or even all of them period, but if it doesn’t feel right to you, bring it up. Statistics show a lot of these symptoms are not often brought up, but kept to themselves. When in doubt, talk it out with your doctor sooner rather than later. A brain MRI and 1-2 lumbar punctures are a good starting point if no answer is found or doubt about what doctor says. Don’t accept being dismissed by your doctor if that happens either. It happened to my dad - I would not accept it. If you guys have any questions about this or leptomeningeal now or later on, I do still respond and try to help any questions that you all have asked me here and in private since my dad.
- Lisa