Apoptotic Index-TUNEL Assay is a method which counts a total of at least 1000 neoplastic nuclei(Cells with morphological changes defining cell death) subdivided in 10 fields chosen randomly at 400x magnification. A 'responder' was defined as having 20% cell death.

The Intent-to-treat (ITT) population comprised of all subjects who were randomised to study treatment, regardless of whether they actually received study medication.

The Ki-67 protein is expressed in all phases of the cell cycle except G0 (low level phase) and serves as a good marker for cell proliferation. Scoring is assessed by point counting 500 to 1000 cells, and is reported as percent positive cells. 20% positive cells to define "positive" (i.e. high risk)

The mITT (modified Intent-to-Treat) population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumor biopsy sample for the primary endpoint analysis.

Over all: Complete Response (CR)- absence of lesions. Partial Response (PR)- CR or PR of target lesions and incomplete response (IC) or stable disease (SD) in other lesions with no new lesions or progressive disease (PD). Stable Disease (SD)-no PD or Response. Progressive Disease (PD)-PD or new lesions. Not Evaluable(NE)- no other definitions. Number of subjects included those who had a scan immediately post lapatanib/placebo monotherapy.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

Over all: Complete Response(CR)-absence of lesions. Partial Response(PR)- CR or PR of target lesions and incomplete response (IC) or stable disease (SD)in other lesions with no new lesions or progressive disease (PD). Stable Disease(SD)-no PD or Response. Progressive Disease(PD)-PD or new lesions. Not Evaluable(NE)- no other definitions. Number of subjects included those who were considered evaluable if they completed a full course of chemoradiotherapy and were able to provide a baseline and follow-up scan following the completion of chemoradiation.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

Over all: Complete Response (CR)-absence of lesions. Partial Response (PR)- CR or PR of target lesions and incomplete response (IC) or stable disease (SD) in other lesions with no new lesions or progressive disease (PD). Stable Disease (SD)-no PD or Response. Progressive Disease (PD)-PD or new lesions. Not Evaluable(NE)- no other definitions.

The Intent-to-treat (ITT) population comprised of all subjects who were randomised to study treatment, regardless of whether they actually received study medication.

Over all: Complete Response (CR) - absence of lesions. Partial Response (PR) - CR or PR of target lesions and incomplete response (IC) or stable disease (SD) in other lesions with no new lesions or progressive disease (PD). Stable Disease (SD)- no PD or Response. Progressive Disease (PD)- PD or new lesions. Not Evaluable(NE)- no other definitions.

The Intent-to-treat (ITT) population comprised of all subjects who were randomised to study treatment, regardless of whether they actually received study medication.

This measures the participants with Circulating Tumor Cells (CTC's)Pre-Treatment numbers of 0 to >= 4. CTC's are tumor cells that escape from the primary tumor into the bloodstream and travel through the circulation to distant sites where they develop into secondary tumors.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. mITT FOLLOW-UP Population of Circulation Tumor Cells

This measures the participants with Circulating Tumor Cells (CTC's) after treatment numbers of 0 to >= 4. CTC's are tumor cells that escape from the primary tumor into the bloodstream and travel through the circulation to distant sites where they develop into secondary tumors.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

This measures the participants with Circulating Tumor Cells (CTC's) after chemoradiotherapy numbers of 0 to >= 4. CTC's are tumor cells that escape from the primary tumor into the bloodstream and travel through the circulation to distant sites where they develop into secondary tumors.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

Estrogen Receptor (ER) variants, ERB-B2 and ERB B-5 consist of the major proportion of ER expression both in normal and cancer tissues. The exact role of these markers are unknown. Acronyms defined: ICH (immunohistochemical) and FISH (fluorescence in situ hybridization).

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

Tumor Suppressor p53 is welcomed and described as "the guardian angel gene," it conserves stability by preventing genome mutation. Human Papillomavirus (HPV) biomarker is un-welcomed and is found to be an important precursor cancers of the head and neck. HPV biomarkers have the ability to bind to and inactivate the Tumor Suppressor p53 biomarker.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

Toxicity Grading scale 0=none, 1=transient symptom, 2=mild symptom that does not interfere with activities of daily living (ADL's) 3=mild but interfers with ADL's w/o hospitalization. 4=requires hopitalization 5=Death.

The Intent-to-treat (ITT) population comprised of all subjects who were randomised to study treatment, regardless of whether they actually received study medication.

Toxicity Grading scale 0=none, 1= transient symptom, 2=mild symptom that does not interfere with activities of daily living (ADL's) 3=mild but interfers with ADL's w/o hospitalization. 4=requires hopitalization 5=Death.

The Intent-to-treat (ITT) population comprised of all subjects who were randomised to study treatment, regardless of whether they actually received study medication.

Position Emission Tomography (PET) scans 3-D images are read alongside CT or magnetic resonance imaging (MRI) scans, the combination gives both anatomic and metabolic information. CT = Computerized axial tomography; a type of x-ray for dense areas of the body. MRI = Magnetic Resonance Imaging which captures a picture using Magnets. Better = improvement in response, Worse = response was downgraded.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

Position Emission Tomography (PET) scans 3-D images are read alongside CT or magnetic resonance imaging (MRI) scans, the combination gives both anatomic and metabolic information. CT = Computerized axial tomography; a type of x-ray for dense areas of the body. MRI = Magnetic Resonance Imaging which captures a picture using Magnets. Better = improvement in response, Worse = response was downgraded.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis.

Definition of an adverse event is any untoward medical occurrence in a patient or clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product.

Safety population consisted of all randomized subjects who took at least one dose of study medication. This population was based on the actual treatment received, if different to the randomized treatment allocation.

Events which started during or After the Chemoradiotherapy Phase. Definition of a serious adverse event is any untoward medicinal occurrence that, at any dose, results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, other.

Safety population consisted of all randomized subjects who took at least one dose of study medication. This population was based on the actual treatment received, if different to the randomized treatment allocation.

Events which started during or After Chemoradiotherapy Phase. Definition of a serious adverse event is any untoward medicinal occurrence that, at any dose, results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, other.

Safety population consisted of all randomized subjects who took at least one dose of study medication. This population was based on the actual treatment received, if different to the randomized treatment allocation.

Events which started during or after Chemoradiotherapy Phase. "Grade 3" are severe and undesirable Adverse Event (significant symptoms requiring hospitalization or invasive intervention; transfusion; elective interventional radiological procedure; therapeutic endoscopy or operation).

Safety population consisted of all randomized subjects who took at least one dose of study medication. This population was based on the actual treatment received, if different to the randomized treatment allocation.

Events which started during or after Chemoradiotherapy Phase. "Grade 4" are life-threatening or disabling Adverse Event (complicated by acute, life-threatening metabolic or cardiovascular complications such as circulatory failure, hemorrhage, sepsis. Life-threatening physiologic consequences; need for intensive care or emergent invasive procedure; emergent interventional radiological procedure, therapeutic endoscopy or operation).

Safety population consisted of all randomized subjects who took at least one dose of study medication. This population was based on the actual treatment received, if different to the randomized treatment allocation.

Events which started during or after Chemoradiotherapy Phase. "Grade 5" are death related to Adverse Event.

Safety population consisted of all randomized subjects who took at least one dose of study medication. This population was based on the actual treatment received, if different to the randomized treatment allocation.

Dynamic Contrast enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an administered contrast agent from -intra into the extravascular tissue over time. Ktrans estimates blood flow and relates to the ease of exchange into extravascular spaces. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g.,tissue perfusion, vessel permeability, vascular surface area, and extracellular/vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

DCE-MRI tracks the diffusion of an intravascularly administered contrast agent into the extravascular tissue over time. Over a period of time, the contrast agent diffuses back into the vasculature (described by the rate constant or Kep). The lower the Kep, the longer the contrast remains in the extravascular space and is more prolonged. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g., vessel permeability, etc.) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

DCE-MRI tracks the diffusion of an intravascularly administered contrast agent into the extravascular tissue over time. Over a period of time, the contrast agent diffuses back into the vasculature (described by the rate constant or Kep). The lower the Kep, the longer the contrast remains in the extravascular space and is more prolonged. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g., vessel permeability, etc.) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

DCE-MRI tracks the diffusion of an intravascularly administered contrast agent into the extravascular tissue over time. Over a period of time, the contrast agent diffuses back into the vasculature (described by the rate constant or Kep). The lower the Kep, the longer the contrast remains in the extravascular space and is more prolonged. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g., vessel permeability, etc.) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

Dynamic Contrast enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an administered contrast agent from -intra into the extravascular tissue over time. Ktrans estimates blood flow and relates to the ease of exchange into extravascular spaces. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g.,tissue perfusion, vessel permeability, vascular surface area, and extracellular/vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

Dynamic Contrast enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an administered contrast agent from -intra into the extravascular tissue over time. Ktrans estimates blood flow and relates to the ease of exchange into extravascular spaces. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g.,tissue perfusion, vessel permeability, vascular surface area, and extracellular/vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

Dynamic Contrast enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an administered contrast agent from -intra into the extravascular tissue over time. Ktrans estimates blood flow and relates to the ease of exchange into extravascular spaces. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g.,tissue perfusion, vessel permeability, vascular surface area, and extracellular/vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

Dynamic Contrast - enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an intravascularly administered contrast agent from intravascular into the extravascular tissue over time. Initial area under the contrast (IAUC), tracks the concentration versus time curve 90 seconds after contrast injection (IAUC90). By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor microenvironment (e.g., tissue perfusion, vessel permeability, vascular surface area, and extracellular-extra vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

Dynamic Contrast - enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an intravascularly administered contrast agent from intravascular into the extravascular tissue over time. Initial area under the contrast (IAUC), tracks the concentration versus time curve 90 seconds after contrast injection (IAUC90). By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor microenvironment (e.g., tissue perfusion, vessel permeability, vascular surface area, and extracellular-extra vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

Dynamic Contrast - enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an intravascularly administered contrast agent from intravascular into the extravascular tissue over time. Initial area under the contrast (IAUC), tracks the concentration versus time curve 90 seconds after contrast injection (IAUC90). By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor microenvironment (e.g., tissue perfusion, vessel permeability, vascular surface area, and extracellular-extra vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

Dynamic Contrast - enhanced Magnetic Resonance Imaging (DCE-MRI) tracks the diffusion of an intravascularly administered contrast agent from intravascular into the extravascular tissue over time. Initial area under the contrast (IAUC), tracks the concentration versus time curve 90 seconds after contrast injection (IAUC90). By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor microenvironment (e.g., tissue perfusion, vessel permeability, vascular surface area, and extracellular-extra vascular volume fraction) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population

DCE-MRI tracks the diffusion of an intravascularly administered contrast agent into the extravascular tissue over time. Over a period of time, the contrast agent diffuses back into the vasculature (described by the rate constant or Kep). The lower the Kep, the longer the contrast remains in the extravascular space and is more prolonged. A volume transfer (i.e, 1/min) constant of contrast agent is used to determine vascular permeability. By plugging DCE-MRI results into an appropriate pharmacokinetic model, physiological parameters of the tumor (e.g., vessel permeability, etc.) are determined.

The mITT population consisted of all subjects who were randomised to study treatment, did not miss lapatinib/placebo treatment for more than 7 consecutive days and had provided sufficient tumour biopsy sample for the primary endpoint analysis. DCE-MRI population