The historic standard for advanced NSCLC up until a few years ago was for patients to complete 4-6 cycles of platinum-based doublet chemo, and then for patients who were doing well and had responded or demonstrated stable disease to take a break from treatment and be followed until progression. At that point, many patients would re-initiate chemo or targeted therapy with an oral agent like Tarceva (erlotinib).

There is no question that the recognition of an activating mutation in the gene for the epidermal growth factor receptor (EGFR) has revolutionized our understanding of why some patients with advanced/metastatic NSCLC develop a profound benefit from the class of oral EGFR tyrosine kinase inhibitors (TKIs).

EGFR stands for epidermal growth factor receptor, which is a molecule on the surface of many cancer cells that can be activated to activate signals that promote cell growth and cell division. Though this target may play a role for many kinds of cancer, non-small cell lung cancer (NSCLC) is one type in which this target protein is seen in a majority of people's cancers.

The initial or "first line" management of advanced NSCLC has evolved quite a bit over the past 10 years, in that time moving from a much more uniform approach of very similar treatment for just about everyone to a revised approach that is far more individualized. First, we assess key issues like the subtype of NSCLC, focusing largely on whether it is squamous cell or non-squamous NSCLC, because treatment tends to diverge very early based on this factor.

The third and final part of my conversation with Drs. Tom Hensing from North Shore Health System in Chicago and David Jackman from Dana Farber Cancer Institute in Boston covered a presentation of an Asian never-smoking woman with an advanced lung adenocarcinoma, the demographic picture most closely associated with potentially but not necessarily having an EGFR mutation or ALK rearrangement.

The second part of my conversation with Drs. Tom Hensing from North Shore Health System in Chicago and David Jackman from Dana Farber Cancer Institute in Boston covered a case of a relatively young, generally healthy woman diagnosed with a lung adenocarcinoma that turned out to be stage IV.

Over three and a half years ago, I wrote a post about about early work looking at the possibility that a PET scan done anywhere from three days to a month out from the start of a new systemic therapy (chemo or EGFR inhibitor) for advanced NSCLC could be predictive of a good outcome or not.

When I was a medical student, the question about lung cancer that was always asked on "the Boards" had to do with the difference between stage IIIA and stage IIIB non-small cell lung cancer (NSCLC). The reason this question was always asked is because patients with stage IIIA NSCLC might be considered for surgery, whereas patients with stage IIIB NSCLC would not be considered for surgery and instead would be treated with chemotherapy and radiation. The idea is that young doctors should be able to make that distinction and to direct patients to the appropriate specialist/treatment.

Several weeks ago, my colleagues Dr. Tom Hensing from North Shore Health System in Chicago, affiliated with the University of Chicago, and Dr. David Jackman from Dana Farber Cancer Institute in Boston, were kind enough to take the time to go over a series of cases in a webinar format. We reviewed the time line of several patients with advanced NSCLC, focusing on two central questions:

1) For various clinical situations, which molecular markers would you be inclined to recommend?

In my last post, I described the novel oral agent PF299804 (PF299), an irreversible "pan-HER" inhibitor not only of the epidermal growth factor receptor but of other members of the human epithelial growth factor receptor (HER) family.