Eidos Therapeutics to Present at Two Upcoming Investor Conferences

Eidos Therapeutics, Inc. (Eidos) (Nasdaq:EIDX) today announced that management will present at two upcoming investor conferences.

• SVB Leerink Global Healthcare Conference The company will present on Thursday, February 28, 2019 at 11:00 a.m. ET. The conference will be held in New York, NY.

• Barclays Global Healthcare Conference The company will present on Tuesday, March 12, 2019 at 10:15 a.m. ET. The conference will be held in Miami, FL.

Live audio webcasts of the presentations can be accessed through the Events & Presentations section of the company's website at ir.eidostx.com. Archived replays of the webcasts will be available on the company's website for 90 days following the live presentations.

About Eidos Therapeutics

Eidos Therapeutics is a clinical stage biopharmaceutical company focused on addressing the large and growing unmet need in diseases caused by transthyretin (TTR) amyloidosis (ATTR). Eidos is developing AG10, a potentially disease-modifying therapy for the treatment of ATTR. For more information, please visit www.eidostx.com.

About transthyretin amyloidosis (ATTR)

ATTR represents a significant unmet need of a comparatively large patient population in the context of rare genetic diseases with an inadequate current standard of care. There are three distinct diseases that comprise the ATTR family: wild-type ATTR cardiomyopathy (ATTRwt-CM), mutant ATTR cardiomyopathy (ATTRm-CM), and ATTR polyneuropathy (ATTR-PN). The worldwide prevalence of each disease is approximately 400,000 patients, 40,000 patients and 10,000 patients, respectively.

All three forms of ATTR are progressive and fatal. For patients with ATTRwt-CM and ATTRm-CM, symptoms usually manifest later in life (age 50+), with median survival of three to five years from diagnosis. ATTR-PN either presents in a patient's early 30s or later (age 50+), and results in a median life expectancy of five to ten years from diagnosis. Progression of all forms of ATTR causes significant morbidity, impacts productivity and quality of life, and creates a significant economic burden due to the costs associated with progressively greater patient needs for supportive care.

About AG10

AG10 is an investigational, orally-administered small molecule designed to potently stabilize tetrameric transthyretin, or TTR, thereby halting at its outset the series of molecular events that give rise to amyloidosis, or ATTR. In a Phase 2 clinical trial in ATTR-CM patients, AG10 was generally well tolerated, demonstrated >90% TTR average stabilization at day 28, and increased serum TTR concentrations, a prognostic indicator of survival in ATTR-CM in a dose-dependent manner. AG10 is currently being studied in an open-label extension of a Phase 2 clinical trial in patients with ATTR cardiomyopathy.

AG10 was designed to mimic a naturally-occurring variant of the TTR gene (T119M) that is considered a rescue mutation because co-inheritance has been shown to prevent ATTR in individuals also inheriting a pathogenic, or disease-causing, mutation in the TTR gene. To our knowledge, AG10 is the only TTR stabilizer in development that has been observed to mimic the “super-stabilizing” properties of this rescue mutation

Media Contact:

Carolyn Hawley, Canale Communications, [phone], [e-mail]

Investor Contact:

Alex Gray, Burns McClellan, [phone], [e-mail]