what does p53 abnormal 50 percent mean - CLL Support

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what does p53 abnormal 50 percent mean

16 Replies

does it mean 50 percent missing? i have p17 deleted but p53 says abnormal 50 percent.

does that mean mutated or missing

I had fish,flow, and immunohistochemical. the above was under FISH.

And as i've said before they decided on b-pll by process of elimination of others.

my b-pll diagnosis was not exactly to b-pll parameters. I think if just taken without any prior knowledge it looked like cll with added polymphocytes.

However they had advantage of a blood test in march with everything perfect and a blood test in august with everthing aok except a 14000 white count attributed to my falling down the stairs and bruising my entire right side.

b-pll was all that was left

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16 Replies
DriedSeaweed profile image
DriedSeaweed

If you give the name of the test or its method someone might be able to answer more confidently.

For example, my FISH says 11q deleted. ATM 50% missing. If you had NGS maybe the language is different. I have never had that done.

in reply to DriedSeaweed

i edited my initial poat

DriedSeaweed profile image
DriedSeaweed in reply to

Thanks! Good luck.

Cllcanada profile image
CllcanadaTop Poster CURE Hero

What type of test are you referring to? If it was a FISH, then 200 B cells are used as a standard and it could refer to about 50% or ~100 cells showing a deletion....

If the test was a Sanger, PCR looking a TP53 mutation then I don't know.

p53 in the current notation refers to protein not the gene that encodes it...

Again B-PLL may differ from CLL... and best discussed with your doctor.

Here are a couple of case studies in B-PLL, looking at the use of Imbruvica (ibrutinib) and Zydelig (idelalisib)/rituxan...

ncbi.nlm.nih.gov/pmc/articl...

Hope you are moving forward with stem cell transplant assessment at DF, unlike CLL , B-PLL needs treatment soon after diagnosis.

Recent look at B-PLL and novel agents

onlinelibrary.wiley.com/doi...

~chris 🇨🇦

in reply to Cllcanada

i edited my initial post

Cllcanada profile image
CllcanadaTop Poster CURE Hero in reply to

I added this link.. to my post above. I think the great news is novel agents will work as a bridge to transplant... have they discussed starting you on it?

onlinelibrary.wiley.com/doi...

in reply to Cllcanada

I take imbruvica and have had dramatic improvement improvement. the stem cell transplant was the recommended therapy before the novelty drug era was really going especially with my 17p deletion. Now i don't know if i will go to 'allo' as my doctor calls it. She did not know i would react this well to ibrutinib and says ventexla will be next. she is really up to snuff with all the new drugs in the pipeline

Cllcanada profile image
CllcanadaTop Poster CURE Hero in reply to

I didn't know you were on treatment.. don't discount Zydelig (idelalisib), it worked very well for me...it still saves venetoclax for later...

The is also the second gen duvelisib... PI3K inhibitor.

Stepping stone drugs... allogeneic transplant should be your goal.

~chris 🇨🇦

in reply to Cllcanada

why should the transplant be my goal?. i have carefully studied as much info as i can get on this. Before the 'novel drug' era -with my deletions-standard therapies did not work and allogenic transplant was the only option. Now today it is not the only option. I say this not really knowing how long any of these novelty drugs will work on me- however since there are so few b-pll patients to begin with-it's guesses. The odds of good success with allo is not that great but has improved with novelty drugs added. my point being that the novelty drug era probably as good odds as the tranplant.

Cllcanada profile image
CllcanadaTop Poster CURE Hero in reply to

No data on novel agents in B-PLL... allos can be curative... certainly not a sure thing, but there is the chance... I would take it.

~chris 🇨🇦

in reply to Cllcanada

it's a moot point until my levels get good enough. the only reason i was sent so soon to 'allo' prep so soon is because she had no idea the imbruvica would work so well so far. Now what she says has changed from 'when you go to allo' to 'if you go to allo'. I have confidence in her and in Dana Farber.

Cllcanada profile image
CllcanadaTop Poster CURE Hero in reply to

Thats good...

I'm very impressed with DF, my CLL specialist just completed his extended fellowship there with Drs. Brown and Davids.

~chris 🇨🇦

in reply to Cllcanada

Davids is my Dana Farber Doctor. He is not the transplant doctor there though. In honesty i felt he was pushing transplant even though the b-pll odds he gave me were from the pre-novel drug era.

in reply to Cllcanada

RIC stem cell transplant has already found 10/10 donor match

Cllcanada profile image
CllcanadaTop Poster CURE Hero in reply to

That's great... you may want to discuss using Imbruvica (ibrutinib) as a conditioning agent rather than chemo... not sure what they would use in B-BLL as a conditioner..likely Campath...H1 monoclonal antibody.

en.m.wikipedia.org/wiki/Ale...

~chris 🇨🇦

Redlion profile image
Redlion

I was 17% Tp53 mutated when I was tested about a year ago prior to treatment. Not sure what the implications are with respect with the degree of mutation so if anyone has a steer on this it would be good to know.

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