Abraxis BioScience (ABII)

First clinical and commercial validation of our nab^® tumor targeting technology

Abraxane^® represents the first in a new class of protein-bound drug particles that takes advantage of albumin, a natural carrier of water insoluble molecules (e.g., various nutrients, vitamins and hormones) found in humans. Because tumors have an increased need for nutrients to support rapid malignant growth, albumin complexes accumulate preferentially in tumors. Recent molecular analyses have identified receptor-mediated pathways (gp60) facilitating active transport of albumin complexes from the blood into tumor tissue and also preferential accumulation in tumors by tumor-secreted proteins such as Secreted Protein Acidic and Rich in Cysteine (SPARC), which can attract albumin. Abraxane^® consists only of paclitaxel nanometer-sized albumin-bound particles and, in a pivotal 460 patient Phase III clinical trial, demonstrated an almost doubling of the response rate, a longer time to tumor progression in metastatic breast cancer as well as an increased survival in patients previously treated for metastatic disease when compared to Taxol^®. We believe that our nab^® tumor targeting technology and these albumin pathways allow more rapid delivery of paclitaxel to the cancer cells, with preferential accumulation while at the same time allowing less drug indiscriminately into normal, healthy cells. This is supported by the clinical findings demonstrated by Abraxane^®.

First clinical and commercial validation of our nab^® tumor targeting technology

Abraxane^® represents the first in a new class of protein-bound drug particles that takes advantage of albumin, a natural carrier of water insoluble molecules (e.g., various nutrients, vitamins and hormones) found in humans. Because tumors have an increased need for nutrients to support rapid malignant growth, albumin complexes accumulate preferentially in tumors. Recent molecular analyses have identified receptor-mediated pathways (gp60) facilitating active transport of albumin complexes from the blood into tissues and resulting in preferential accumulation in tumors by tumor-secreted proteins (SPARC), which attract albumin. Abraxane^® consists only of paclitaxel nanometer-sized albumin-bound particles and, in a pivotal 460 patient Phase III clinical trial, demonstrated an almost doubling of the response rate, a longer time to tumor progression in metastatic breast cancer as well as an increased survival in patients previously treated for metastatic disease when compared to Taxol^®. We believe that our nab^® tumor targeting technology and these albumin pathways allow more rapid delivery of paclitaxel to the cancer cells, with preferential accumulation while at the same time allowing less drug indiscriminately into normal, healthy cells. This is supported by the clinical findings demonstrated by Abraxane^®.

First clinical
and commercial validation of our nab^® tumor targeting technology

First clinical and commercial validation of our nab™ tumor targeting technology

Abraxane^® represents the first in a new class of protein-bound taxane particles that takes advantage of albumin, a natural carrier of water insoluble molecules (e.g., various nutrients, vitamins and hormones) found in humans. Because tumors have an increased need for nutrients to support rapid malignant growth, albumin complexes accumulate preferentially in tumors. Recent molecular analyses have identified receptor-mediated pathways (gp60) facilitating active transport of albumin complexes from the blood into tissues and resulting in preferential accumulation in tumors by tumor-secreted proteins (SPARC), which attract albumin. Abraxane^® consists only of paclitaxel nanometer-sized albumin-bound particles and, in a pivotal 460 patient Phase III clinical trial, demonstrated an almost doubling of the response rate, a longer time to tumor progression in metastatic breast cancer as well as an increased survival in patients previously treated for metastatic disease when compared to Taxol^®. We believe that our nab™ tumor targeting technology and these albumin pathways allow more rapid delivery of paclitaxel to the cancer cells, with preferential accumulation while at the same time allowing less drug indiscriminately into normal, healthy cells. This is supported by the clinical findings demonstrated by Abraxane^®.

First clinical and commercial validation of our nab^™ tumor targeting technology

Abraxane^® represents the first in a new class of protein-bound taxane particles that takes advantage of albumin, a natural carrier of water insoluble molecules (e.g., various nutrients, vitamins and hormones) found in humans. Because tumors have an increased need for nutrients to support rapid malignant growth, albumin complexes accumulate preferentially in tumors. Recent molecular analyses have identified receptor-mediated pathways (gp60) facilitating active transport of albumin complexes from the blood into tissues and resulting in preferential accumulation in tumors by tumor-secreted proteins (SPARC), which attract albumin. Abraxane^® consists only of paclitaxel nanometer-sized albumin-bound particles and, in a pivotal 460 patient Phase III clinical trial, demonstrated an almost doubling of the response rate, a longer time to tumor progression in metastatic breast cancer as well as an increased survival in patients previously treated for metastatic disease when compared to Taxol^®. We believe that our nab™ tumor targeting technology and these albumin pathways allow more rapid delivery of paclitaxel to the cancer cells, with preferential accumulation while at the same time allowing less drug indiscriminately into normal, healthy cells. This is supported by the clinical findings demonstrated by Abraxane^®.