1/n

💊How to best combine targeted agents with #radiotherapy☢️

Ch4⃣from our book
springer.com/us/book/978303…

Biomarkers of clinical radioresistance. Great pleasure to have written this one with @max_diehn @michaelsbinkley Iris Eke @StanfordRadOnc🙏

#radonc #radbio #RTdrugcombo
2/n

As @SorenBentzen keeps saying, absolute radioresistance does not exist. You just have to up the dose💪

That is very different from drug response, which is a yes/no situation - where more drug does not give you typically a better response (with caveats 😉)

#radonc #radbio
3/n

Tumors can have variable radioresistance. Lab & human data indicate that relationship between dose + tumor eradication is sigmoid🚨

Really high doses are prohibited by tolerance of normal tissue surrounding the tumor‼️

= Rationale for pursuing targeted radiosensitizers💡
4/n

Still poorly studied: What is the nature of the #cancer stem cells (= clonogenic cells) that #radiotherapy needs to eliminate to prevent tumor regrowth❓

Only 1 surviving stem cell can repopulate the tumor!

Treatment should be stem cell specific!

#radbio #researchmatters
5/n

In the clinic today, what is the most important marker of radioresistance that #radonc clinicians should factor into their treatment decisions?

@rweichselbaum @Hammond_Lab @jtorresroca @_MichaelBaumann @sophia_kamran
6/6

Next week, part 2 of this chapter. Diving into some of our favorite tumor genes (KEAP1 KRAS TP53) and discussing importance of tumor size vs genotype 😉

@max_diehn @michaelsbinkley 🙏🙏🙏

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