Is anyone involved in clinical trials for ET, specifically for CALR?

Posted by lisanell @lisanell, Dec 30, 2025

Is anyone involved in any clinical trials for ET, specifically for CALR? I am unable to tolerate Hydroxyurea, and am currently only taking aspirin. I saw this one: “JNJ-88549968 for the Treatment of Calreticulin (CALR)-Mutated Myeloproliferative Neoplasms” on clinical trials.gov and other cancer center sites.

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I’m not in a clinical trial for ET / CALR.
I was taking 1 500 mg hydroxyurea until my platelet count decreased. Now I’m on a lower weekly dose.
My platelet count went from 1.1 million to 450k. It takes time!!

I had trouble adjusting to hydrea but after about 9 mo I was ok.
There are alternative meds and you can ask your doc.

It depends how high your count is and your level of side effects.
Good luck.

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I will hopefully begin a trial next week. I was diagnosed with ET (CALR) in 2018 and was on HU for about 3 years before became intolerant. Have been on Jakafi since then. I was at a LLS conference a few years ago and was asking a pharma rep about specialists. Turns out one is located not far from where I live and have moved to him as he does clinical trials (I did really like my pervious doc and was difficult to leave). We tried to get on a phase 1 trial about 3 years ago, but a couple of items were just barely to low. As a new phase 3 is opening for Bomedemstat I am hoping for that. Getting on is no easy task. For this one it requires 2 bone marrow biopsies, about 10 tubes of blood, and general physical exam. Turns out my first set of bmb turned out to be bad samples. But looking at preliminary data is worth a second round so have gone through the screening twice in 2 months. Fortunately, I have a great care team at the facility.
Looks like another trial for another solution is opening as well that also has promising early results (see post about ASH conference also posted today).

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https://mailchi.mp/e3b49744f1a5/new-developments-in-mpn-research-10612935
is the link eferret provided on another thread to a report on that conference

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Profile picture for drbart86 @drbart86

I will hopefully begin a trial next week. I was diagnosed with ET (CALR) in 2018 and was on HU for about 3 years before became intolerant. Have been on Jakafi since then. I was at a LLS conference a few years ago and was asking a pharma rep about specialists. Turns out one is located not far from where I live and have moved to him as he does clinical trials (I did really like my pervious doc and was difficult to leave). We tried to get on a phase 1 trial about 3 years ago, but a couple of items were just barely to low. As a new phase 3 is opening for Bomedemstat I am hoping for that. Getting on is no easy task. For this one it requires 2 bone marrow biopsies, about 10 tubes of blood, and general physical exam. Turns out my first set of bmb turned out to be bad samples. But looking at preliminary data is worth a second round so have gone through the screening twice in 2 months. Fortunately, I have a great care team at the facility.
Looks like another trial for another solution is opening as well that also has promising early results (see post about ASH conference also posted today).

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@drbart86 Thanks to all who participate in trials. Not something many of us are willing or able to do, but it helps all of us.

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Profile picture for drbart86 @drbart86

I will hopefully begin a trial next week. I was diagnosed with ET (CALR) in 2018 and was on HU for about 3 years before became intolerant. Have been on Jakafi since then. I was at a LLS conference a few years ago and was asking a pharma rep about specialists. Turns out one is located not far from where I live and have moved to him as he does clinical trials (I did really like my pervious doc and was difficult to leave). We tried to get on a phase 1 trial about 3 years ago, but a couple of items were just barely to low. As a new phase 3 is opening for Bomedemstat I am hoping for that. Getting on is no easy task. For this one it requires 2 bone marrow biopsies, about 10 tubes of blood, and general physical exam. Turns out my first set of bmb turned out to be bad samples. But looking at preliminary data is worth a second round so have gone through the screening twice in 2 months. Fortunately, I have a great care team at the facility.
Looks like another trial for another solution is opening as well that also has promising early results (see post about ASH conference also posted today).

Jump to this post

@drbart86 Well just went through my final screening this morning - and while my Doctor was very optimistic, I was randomly (supposedly) assigned to the control group. While I can still be considered to be on the trial, I will remain on Jakafi, and have to do labs more often than normal. As a scientist, understand the need for controls, but the new compound (Bomedemstat) looks very promising and at best I can say I am very disappointed not to be on the test product - not really sure how to feel, but not a good day. I am so tired of my symptom load and do not want to accept it as the "new normal".
Now I must decide whether to stay on the trial or not, if I do I can go on the test in a year. To stay on the trial means lots more visits to the clinic (about 45 miles away and often with heavy traffic) and likely higher costs to me as the sponsor only pays for the few added blood assays.
It is amazing how much of a lift one can get when they feel there is a bit of hope in these situations, and how hard the fall is when it does not materialize. Now I wonder if all the tests (including 4 bmb) and with the encouragement and support from my doctor and his team, if these are worth the emotional capital.

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Profile picture for drbart86 @drbart86

@drbart86 Well just went through my final screening this morning - and while my Doctor was very optimistic, I was randomly (supposedly) assigned to the control group. While I can still be considered to be on the trial, I will remain on Jakafi, and have to do labs more often than normal. As a scientist, understand the need for controls, but the new compound (Bomedemstat) looks very promising and at best I can say I am very disappointed not to be on the test product - not really sure how to feel, but not a good day. I am so tired of my symptom load and do not want to accept it as the "new normal".
Now I must decide whether to stay on the trial or not, if I do I can go on the test in a year. To stay on the trial means lots more visits to the clinic (about 45 miles away and often with heavy traffic) and likely higher costs to me as the sponsor only pays for the few added blood assays.
It is amazing how much of a lift one can get when they feel there is a bit of hope in these situations, and how hard the fall is when it does not materialize. Now I wonder if all the tests (including 4 bmb) and with the encouragement and support from my doctor and his team, if these are worth the emotional capital.

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@drbart86

Only you can make this tough decision.

Clinical trials can't happen without control groups.

But to me, the priority must be YOU and your quality of life. I for one couldn't layer more driving, more stress -- let alone more expense -- onto my daily load. Please give yourself permission to make the choice that's best for you.

I am so sorry you didn't get the opportunity to try the new compound.

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Thanks for the support. It will not be an easy decision as I know the control data is needed.
Hope well on your journey.

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Profile picture for drbart86 @drbart86

@drbart86 Well just went through my final screening this morning - and while my Doctor was very optimistic, I was randomly (supposedly) assigned to the control group. While I can still be considered to be on the trial, I will remain on Jakafi, and have to do labs more often than normal. As a scientist, understand the need for controls, but the new compound (Bomedemstat) looks very promising and at best I can say I am very disappointed not to be on the test product - not really sure how to feel, but not a good day. I am so tired of my symptom load and do not want to accept it as the "new normal".
Now I must decide whether to stay on the trial or not, if I do I can go on the test in a year. To stay on the trial means lots more visits to the clinic (about 45 miles away and often with heavy traffic) and likely higher costs to me as the sponsor only pays for the few added blood assays.
It is amazing how much of a lift one can get when they feel there is a bit of hope in these situations, and how hard the fall is when it does not materialize. Now I wonder if all the tests (including 4 bmb) and with the encouragement and support from my doctor and his team, if these are worth the emotional capital.

Jump to this post

@drbart86 hi, I was diagnosed with two mutations in the bone marrow Jak2 and Calr, apparently very unusual, I was on 300 c aranesp injection once every three weeks and 150 interferon injection and jakofi 5 mg in morning and 2.5 in evening..this continued for several months and successfully reduced my platelets and my haemaglobin came up to almost normal.. unfortunately I then started to get severe headaches and generally felt unwell so was taken off the interferon and put on 500 aranesp injection and jakofi 5mg morning and night...my last visit the platelets had gone back up and haemaglobin had dropped so new medication doesn't seem to be doing the job tho maybe early days. I may suggest going back on the interferon injection as it seemed to work despite side affects. I suffer with severe tiredness which is most frustrating, am grand sitting all day but that is not living...not sure if this is of any interest..good luck with your treatment

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Profile picture for cathy8 @cathy8

@drbart86 hi, I was diagnosed with two mutations in the bone marrow Jak2 and Calr, apparently very unusual, I was on 300 c aranesp injection once every three weeks and 150 interferon injection and jakofi 5 mg in morning and 2.5 in evening..this continued for several months and successfully reduced my platelets and my haemaglobin came up to almost normal.. unfortunately I then started to get severe headaches and generally felt unwell so was taken off the interferon and put on 500 aranesp injection and jakofi 5mg morning and night...my last visit the platelets had gone back up and haemaglobin had dropped so new medication doesn't seem to be doing the job tho maybe early days. I may suggest going back on the interferon injection as it seemed to work despite side affects. I suffer with severe tiredness which is most frustrating, am grand sitting all day but that is not living...not sure if this is of any interest..good luck with your treatment

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@cathy8 So far I was on HU for about 3 years before I had issues then have switched to Jakafi 10 mg 2X/d and all the time with ld aspirin. I has held platelets "steady" but above normal, but nothing that the doctors I have consulted with are concerned with at this point as I have not had any clotting indications. Biggest challenge has not been the platelets per se, but the symptom load , mainly fatigue, headaches, abdominal, etc. We have discussed Besremi, but maybe another time. I have been lucky as live in a location that has a great MPN specialist and am considering a move, also near a MPN specialist, that I have consulted and also really like.

good luck with your treatments as well.

REPLY
Profile picture for drbart86 @drbart86

@drbart86 Well just went through my final screening this morning - and while my Doctor was very optimistic, I was randomly (supposedly) assigned to the control group. While I can still be considered to be on the trial, I will remain on Jakafi, and have to do labs more often than normal. As a scientist, understand the need for controls, but the new compound (Bomedemstat) looks very promising and at best I can say I am very disappointed not to be on the test product - not really sure how to feel, but not a good day. I am so tired of my symptom load and do not want to accept it as the "new normal".
Now I must decide whether to stay on the trial or not, if I do I can go on the test in a year. To stay on the trial means lots more visits to the clinic (about 45 miles away and often with heavy traffic) and likely higher costs to me as the sponsor only pays for the few added blood assays.
It is amazing how much of a lift one can get when they feel there is a bit of hope in these situations, and how hard the fall is when it does not materialize. Now I wonder if all the tests (including 4 bmb) and with the encouragement and support from my doctor and his team, if these are worth the emotional capital.

Jump to this post

@drbart86 so sorry that you are in this situation- I’m sure it is discouraging. This is what I am cautious about when considering asking about a trial. I don’t live anywhere near where they are being offered, so unless they could work with my local clinic and doctor, I don’t think it would be feasible. (Still need to discuss with the hematologist.)

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