Synta Announces Fast Track Designation Granted for Ganetespib in Non-Small Cell Lung Adenocarcinoma

  Synta Announces Fast Track Designation Granted for Ganetespib in Non-Small
  Cell Lung Adenocarcinoma

Business Wire

LEXINGTON, Mass. -- September 12, 2013

Synta Pharmaceuticals Corp. (NASDAQ:SNTA) announced today that the U.S. Food
and Drug Administration (FDA) has granted Fast Track designation to the
investigation of ganetespib, the Company’s lead Hsp90 inhibitor drug
candidate, to improve overall survival when administered in combination with
docetaxel for the treatment of patients with metastatic non-small cell lung
adenocarcinoma who have progressed following one prior chemotherapy regimen.
FDA’s Fast Track Drug Development Program is designed to facilitate the
clinical development and expedite the review of drugs that are intended to
treat serious medical conditions and that demonstrate the potential to fill
unmet medical needs.

“We are very pleased that FDA has granted this important designation to the
ganetespib development program,” said Safi Bahcall, President and CEO of
Synta. “We look forward to continued progress and bringing ganetespib to
cancer patients as quickly as possible.”

Ganetespib is currently being evaluated as a treatment of non-small cell lung
adenocarcinoma in the GALAXY program, consisting of the GALAXY-1 Phase 2b/3
all-comer trial and the GALAXY-2 Phase 3 trial enriched for patients most
likely to benefit from ganetespib treatment.

About Ganetespib

Ganetespib, an investigational drug candidate, is a selective inhibitor of
heat shock protein 90 (Hsp90), a molecular chaperone which controls the
folding and activation of a number of client proteins that drive tumor
development and progression. Many solid and hematologic tumors are dependent
on Hsp90 client proteins including proteins involved in “oncogene addiction”
(ALK, HER2, mutant BRAF and EGFR, androgen receptor, estrogen receptor, JAK2);
proteins involved in resistance to chemotherapy and radiation therapy (ATR,
BCL2, BRCA1/2, CDK1/4, CHK1, survivin, and WEE1); proteins involved in
angiogenesis (HIF-1alpha, VEGFR, PDFGR, and VEGF); and proteins involved in
metastasis (MET, RAF, AKT, MMPs, HIF-1alpha, and IGF-1R). In preclinical
models, inhibition of Hsp90 by ganetespib results in the inactivation,
destabilization, and eventual degradation of these cancer-promoting proteins.
Ganetespib is being evaluated in trials in lung cancer, breast cancer, and
other tumor types. The most common adverse event seen to date has been
transient, mild or moderate diarrhea, which has been manageable with standard
supportive care. Information on these trials can be found at Ganetespib has received Fast Track designation from
FDA for second-line treatment of non-small cell lung adenocarcinoma in
combination with docetaxel.

About the GALAXY Program

The GALAXY (Ganetespib Assessment in Lung cAncer with docetaXel) program
consists of two randomized trials comparing the combination of ganetespib and
docetaxel versus docetaxel alone in patients with Stage IIIB/IV NSCLC who have
received one prior systemic therapy: a 300-patient Phase 2b/3 trial (GALAXY-1)
to determine the patient population most likely to derive benefit from
ganetespib, and a 500-patient confirmatory Phase 3 trial (GALAXY-2). More
information about the GALAXY trials can be found at
(NCT01348126 and NCT01798485).

About Lung Cancer

Lung cancer is the leading cause of cancer-related death in the world,
accounting for nearly 1.4 million deaths in 2008, according to the World
Health Organization. The five-year survival rate for this disease is
approximately 16%; over half of people with lung cancer die within one year of
being diagnosed. In the U.S., the American Cancer Society estimates that
228,000 cases of lung cancer will be diagnosed in 2013. Non-small cell
adenocarcinoma comprises about 40% of all lung cancer.

About Synta Pharmaceuticals

Synta Pharmaceuticals Corp. is a biopharmaceutical company focused on
discovering, developing, and commercializing small molecule drugs to extend
and enhance the lives of patients with severe medical conditions, including
cancer and chronic inflammatory diseases. Synta has a unique chemical compound
library, an integrated discovery engine, and a diverse pipeline of clinical-
and preclinical-stage drug candidates with distinct mechanisms of action and
novel chemical structures. All Synta drug candidates were invented by Synta
scientists using our compound library and discovery capabilities. For more
information, please visit

Safe Harbor Statement

This media release may contain forward-looking statements about Synta
Pharmaceuticals Corp. Such forward-looking statements can be identified by the
use of forward-looking terminology such as "will", "would", "should",
"expects", "anticipates", "intends", "plans", "believes", "may", "estimates",
"predicts", "projects", or similar expressions intended to identify
forward-looking statements. Such statements, including statements relating to
timing and expected developments in the ganetespib program, reflect our
current views with respect to future events and are based on assumptions and
subject to risks and uncertainties that could cause actual results to differ
materially from those expressed or implied by such forward-looking statements,
including those described in "Risk Factors" of our Form 10-K for the year
ended December 31, 2012 as filed with the Securities and Exchange Commission.
Synta undertakes no obligation to publicly update forward-looking statements,
whether because of new information, future events or otherwise, except as
required by law.


Synta Pharmaceuticals Corp.
George Farmer, 781-541-7213
Argot Partners
Andrea Rabney, 212-600-1494
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