13q deletion - what is it?: I wonder if anyone... - CLL Support

CLL Support

23,253 members39,949 posts

13q deletion - what is it?

Graham2222 profile image
6 Replies

I wonder if anyone can help. My recent bone marrow aspiration and biopsy indicated 13 q deletion and P53 unmutated. I asked my consultant what this meant and he helpfully said that the unmutation was a good sign and that, oddly, the 13q deletion seemed to be a good factor in terms of prognosis.

There seems to be little on the internet that explains in layman's terms what the 13q deletion is and what the consequences might be for those of us with CLL. There is a lot more available when it is connected with different childhood diseases or abnormalities.

I understand that 13 q deletion means that a part of my DNA - a chromosome - has been deleted and that this been 'acquired' as a result of my CLL.

Does anyone know what the consequences might be, and whether I should be doing anything to mitigate the effects, if any?

Written by
Graham2222 profile image
Graham2222
To view profiles and participate in discussions please or .
Read more about...
6 Replies
Newdawn profile image
NewdawnAdministrator

Graham, someone much cleverer than myself on the science of CLL will surely be along to explain the complexities to you but in the meantime you may find the following articles useful in aiding your understanding. The first one from Cheya Venkat is a little dated so don't get spooked by some of the survival rate figures. Treatments have developed and things have moved on since this time. Nevertheless the underlying explanations are very useful;

clltopics.org/PI/Type.htm

The second article by Dr. Sharman explains the difference between 'mutated and unmutated'. You will see that the information your Consultant gave you on on your unmutated status being favourable is puzzling but in terms of the 'risk bucket', dependent on other factors, 13q deletion is generally seen as a 'favourable' one.

cll-nhl.com/2014/04/mutated...

Also you'll find the related article section to the right has information that you may find useful;

cll-nhl.com/2012/07/interpr...

Hope they help. In terms of mitigating the effects, apart from keeping as well as possible, I honestly know of no lifestyle strategy that impacts on our unique genetic profile but I'd love to be proven wrong.

Best wishes,

Newdawn

Graham2222 profile image
Graham2222 in reply toNewdawn

Dear NewDawn. Thanks ever so much. I've had a glance at these, but will study them in much more detail when I'm at my desktop. They look very helpful indeed - im grateful to you for digging them out. Best wishes. Graham

AussieNeil profile image
AussieNeilPartnerAdministrator

Hi Graham,

Further to Newdawn's reply, below I've referenced two more articles from Chaya Venkat. Again, these are several years old, but still provide useful, relevant information, with Terry Hamblin's take on prognostic testing particularly so. The most important thing to bear in mind when you begin reading these articles is that they are only useful as background guides to individuals - they are only really powerful when used to look at populations of CLL patients. To explain that more, if you look at the basic FISH testing covered in these references, that test looks for just four chromosomal abnormalities and if they aren't found, you are told you have a 'Normal' result. The 'Normal' is a misnomer, and really should be 'Unknown'. What we are finding out as research continues (with Dr Sharman's article an excellent recent contribution on what it means to us), is that we are continually discovering new chromosomal abnormalities that together with the already known ones, are increasingly explaining why someone with poor markers may in fact do better than someone with good markers and vice versa.

Where are we with prognostic markers today? By Dr. Terry Hamblin (June 2010)

updates.clltopics.org/2286-...

Does the Percentage of 13q deletion matter?

updates.clltopics.org/3378-...

For the latter article, you need to bear in mind that often it's not a clear measurement of the absence or presence of some of these prognostic markers. There's an arbitrary cut off, based on research, where less than a set percentage is deemed 'negative' and more 'positive'. Further, some of these markers can shift over time as CLL progresses, particularly under the influence of chemotherapy treatment.

It's best not to dwell too much on these prognostic tests; they can be useful in determining what treatments will work best (particularly the chemotherapy treatments), but that's about as far as it goes with regard to 'mitigating the effects'.

Neil

Cllcanada profile image
CllcanadaTop Poster CURE Hero

I agree with Neil... don't dwell on this stuff, in fact there are many other things at play. If you want to be proactive, eat well, loose weight and exercise...get healthy.

FISH prognosis is clinically relevant, but less so today than a few years ago... new markers , sub clones and new treatments are lessening its importance...

~chris

Graham2222 profile image
Graham2222

Many thanks for all the replies, which have been very helpful in understanding this slightly mysterious condition.

RedBarchetta profile image
RedBarchetta

I'm not a doctor, just a fellow also with 13q- and a mutated IgHV, umutated tp53. If you had to pick which deletion, most would pick the 13q deletion as the average prognosis tends to be the best. Many of us are on a treatment of watch and wait for many years.

13q- is a loss of sequence in a gene. Cause may never be known for certain, but some chemicals will cause it. As a consequence our bodies begin creating too many lymphocytes, a particular white blood cell that produces anti-bodies to fight germs. Though you think you'd be the healthiest, the trouble is, those surplus of lymphocytes are immature, don't do their job, and linger far too long in the lymph nodes, spleen, and liver. Eventually they begin crowding out other blood cells.

Good news is medicine has produced some right bang up treatments in the last decade so there are some brilliant options available when you eventually reach the end of watch and wait. I've been on W&W going on 6 years now. I know people who've been on W&W for multiple decades.

Not what you're looking for?

You may also like...

13 Q DELETION, JUST GOT THE FISH REPORT DONT KNOW WHAT IT MEANS, CLL

hello, i just got my mothers reports of FISh it says 13 q deletion, i dont understand what that...
ABHINAVGARG profile image

FISH Results; Co-existance of Trisomy 12 & 13q deletion

Hello, I have been recently diagnosed with CLL and have received the results of my bone marrow...
kpminn profile image

13Q Deletion and ATM Mutation

Hi All, While I wait for my appointment to see a specialist at Dana Farber (June 1) and have only...
controlsct profile image

Attention proud owners of 13q deletion-Which prognostic marker is responsible for the clinical heterogeneity in CLL with 13q deletion?

In a study, comparing the efficiency of MLPA with cytogenetic and FISH, it was shown that patients...
Yalokin profile image

11 Q deletion? Mutated or unmutated?

I asked our CLL doctor if my husband with 11 q deletion was unmutated which is what I had assumed,...
kathymac52 profile image

Moderation team

See all
Newdawn profile image
NewdawnAdministrator
Jm954 profile image
Jm954Administrator
AussieNeil profile image
AussieNeilAdministrator

Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.

Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.