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0.5 log Reduction

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Hi all,

The Canadian Consensus Guidelines for the treatment of CML states that a

0.5 log increase in RQ-PCR test results indicates disease progression

and needs immediate attention. The first thing they suggest to do is to

have the test repeated to make sure it is valid.

I was under the impression that it took a 1 log increase before you took

action. Maybe it is because we are more conservative in Canada (pun

intended).

This was presented at the Montreal conference last Saturday. I have been

unable to obtain a copy of the guidelines.

Zavie

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I don't understand this at all Zavie. Dr. Druker has said that PCR's

typically have a variability of 5 fold. Math isn't my strong subject

but isn't a 5 fold change the same as a 0.5 log change?

I find this disturbing since I've recently had a 0.4 log increase.

Tracey

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Hi Zavie Your heading said .5 log reduction and the body of your message

indicated a .5 log increase. I'm confused

[ ] 0.5 log Reduction

> Hi all,

>

> The Canadian Consensus Guidelines for the treatment of CML states that a

> 0.5 log increase in RQ-PCR test results indicates disease progression

> and needs immediate attention. The first thing they suggest to do is to

> have the test repeated to make sure it is valid.

>

> I was under the impression that it took a 1 log increase before you took

> action. Maybe it is because we are more conservative in Canada (pun

> intended).

>

> This was presented at the Montreal conference last Saturday. I have been

> unable to obtain a copy of the guidelines.

>

> Zavie

>

>

>

>

>

>

>

>

>

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Hello Zavie and everyone,

The Canadian guidelines have not been published,ergo no patients have

been given a copy yet. It will be made available after it is

published. As we discussed in October, if copies were distributed

before publication that would have a negative impact on any " peer

reviewed " journal wanting to publish the guidelines. So, we all

shall wait patiently.

It was my understanding and it was again reiterated on Sunday with

Suzanne Kamel-Reid that a o.5 log increase is a " flag " that something

might be going on and retesting is the first step to determine the

next steps.

Hope this helps,

Cheers and peace,

Cheryl-Anne

>

> Hi all,

>

> The Canadian Consensus Guidelines for the treatment of CML states

that a

> 0.5 log increase in RQ-PCR test results indicates disease

progression

> and needs immediate attention. The first thing they suggest to do

is to

> have the test repeated to make sure it is valid.

>

> I was under the impression that it took a 1 log increase before you

took

> action. Maybe it is because we are more conservative in Canada (pun

> intended).

>

> This was presented at the Montreal conference last Saturday. I have

been

> unable to obtain a copy of the guidelines.

>

> Zavie

>

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