OPKO Announces Positive Interim Six-Month Lagova™ (hGH-CTP) Phase 2 Data in Pediatric Growth Hormone Deficiency Disorder

OPKO Health (Ireland)

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June 23, 2014 2:00pm EDT

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Interim efficacy results show that a single weekly injection of

Lagova (hGH-CTP) can replace seven consecutive daily injections of

currently marketed human growth hormone (hGH)

Conference Call and Slide Presentation Webcast Scheduled Tuesday at

8:30am ET / 7:30am CT

MIAMI--(BUSINESS WIRE)--

OPKO Health, Inc. (NYSE:OPK), a multinational biopharmaceutical and

diagnostics company, today announced 6 month results of a Phase 2

dose-finding study evaluating the safety and efficacy of its novel

long-acting human growth hormone product (Lagova) to treat pediatric

growth hormone deficiency disorder (GHD).

All three Lagova once-weekly doses demonstrate strong catch-up growth

during the six months treatment. The annualized growth rates are above

12 cm in all three doses. The results are supported by excellent dose

dependent pharmacokinetics (PK) and pharmacodynamics (PD) profiles.

Lagova shows a promising safety profile with no serious adverse events

reported. Glucose and lipid metabolism markers are within the normal

ranges. No lipoatrophy was observed in any patients dosed, and no

clinically significant local tolerability issues were identified.

“The interim results further affirm that a once-weekly administration of

Lagova can replace daily injections of marketed hGH in pediatric GHD

patients. The results enable dose selection for the company’s upcoming

Phase 3 pediatric trial,” said Dr. Ron Rosenfeld, clinical advisor on

the study and professor of Pediatrics (emeritus), Stanford University

and professor of Pediatrics at Oregon Health and Science University

(emeritus). “Because Lagova consists of native human growth hormone

attached to a C-Terminal Peptide of endogenous hormone, one would

anticipate low immunogenicity,” Rosenfeld noted.

“Based on these encouraging safety and efficacy results, OPKO plans to

move aggressively into a single confirmatory pivotal Phase 3 study for

pediatric GHD patients. We hope to make Lagova available to pediatric

GHD patients as soon as possible,” said CEO, Phillip Frost, M.D. “Lagova

is one of a family of important products being developed at OPKO

Biologics designed to improve compliance and offer ease of

administration to patients.”

Study Design

The randomized, comparator-controlled Phase 2 study was conducted in up

to 56 pre-pubertal, naïve GHD children receiving one of three Lagova

doses as once-weekly regimen (0.25, 0.48, 0.66mg/Kg/week; equivalent of

0.18, 0.35, 0.48 mg/Kg/week of hGH) or daily hGH (34µg/Kg/day)

subcutaneously. In order to introduce naïve patients to the allocated

Lagova dose in a gradual manner, a stepwise dose increase approach was

implemented. Once patients reached the targeted doses, Lagova, GH, IGF-1

and IGF-BP3 concentrations were measured and PK-PD analysis was

conducted utilizing a population based approach.

Study Results

An interim analysis of 6 months data demonstrated that all doses of

Lagova used in the study provided strong catch-up growth response better

than historical controls of daily growth hormone therapy.

The baseline characteristics of all patients were comparable among all

groups. Interim analysis of the PK profile following administration of

Lagova demonstrates a significantly extended half-life as reflected by

the T1/2 and AUC respectively. A dose dependent PD (IGF-1) response was

observed between Lagova cohorts, reaching steady state with no

accumulation or excessive levels. All cohorts demonstrated promising

“catch-up” growth, in line with reported age and GHD severity-matched

data. The annualized height velocities are more than 12 cm, which

correlates with the PK/PD profile in those patients.

Conference Call and Webcast

OPKO will hold a conference call and live webcast on Tuesday, June 24,

2014 at 8:30 a.m. EDT (7:30 a.m. CDT). The dial-in numbers are

1-877-407-0789 for domestic callers and 1-201-689-8562 for international

callers. To join the live webcast of the presentation, please register

for ‘OPKO Health: ENDO Conference’ on June 24, 2014, at 8:30 a.m. EDT

(7:30 a.m. CDT) at

After the webcast, the call will remain available on the OPKO website, www.opko.com ,

for 30 days.

About Lagova (hGH-CTP)

In June 2013, OPKO initiated a pivotal Phase 3 clinical trial in adults

for its proprietary long-acting version of hGH-CTP (Lagova). Lagova has

been awarded orphan drug designation in the U.S. and Europe for both

adults and children with growth hormone deficiency.

ABOUT OPKO HEALTH

OPKO is a multinational biopharmaceutical and diagnostics company that

seeks to establish industry-leading positions in large, rapidly growing

markets by leveraging its discovery, development and commercialization

expertise and novel and proprietary technologies. For more information,

visit http://www.opko.com .

SAFE HARBOR STATEMENT

This press release contains "forward-looking statements," as that

term is defined under the Private Securities Litigation Reform Act of

1995 (PSLRA), which statements may be identified by words such as

"expects," "plans," "projects," "will," "may," "anticipates,"

"believes," "should," "intends," "estimates," and other words of similar

meaning, including statements regarding expected results and benefits of

Lagova, including its safety and efficacy, whether OPKO's clinical

trials for adult and pediatric growth hormone deficiency will generate

data to support marketing approval, whether a single injection of Lagova

can replace seven consecutive daily injections of currently marketed hGH,

whether Lagova will have low immunogenecity, the expected

commencement date for the Phase 3 clinical trial for Lagova in pediatric

patients, whether Lagova will be successfully developed or

commercialized, expectations regarding the product and its market

potential, as well as other non-historical statements about our

expectations, beliefs or intentions regarding our business, technologies

and products, financial condition, strategies or prospects. Many factors

could cause our actual activities or results to differ materially from

the activities and results anticipated in forward-looking statements.

These factors include those described in our filings with the Securities

and Exchange Commission, as well as the risks inherent in funding,

developing and obtaining regulatory approvals of new,

commercially-viable and competitive products and treatments, including

the risks that the Phase 3 clinical trials for the Lagova product may

not be successful or achieve the expected results or effectiveness, and

may not generate data that would support the approval or marketing of

this product for the indications being studied, that others may develop

products which are superior to Lagova, and that Lagova may not have

advantages or prove to be superior over presently marketed products or

products introduced in the future. In addition, forward-looking

statements may also be adversely affected by general market factors,

competitive product development, product availability, federal and state

regulations and legislation, the regulatory process for new products and

indications, manufacturing issues that may arise, patent positions and

litigation, among other factors. The forward-looking statements

contained in this press release speak only as of the date the statements

were made, and we do not undertake any obligation to update

forward-looking statements. We intend that all forward-looking

statements be subject to the safe-harbor provisions of the PSLRA.

OPKO Health, Inc.

FTI Consulting

Investor Relations

Barbara Ryan,

Managing Director

or

Media

Relations

Kimberly Ha, 212-850-5612

Senior Director

Source: OPKO Health, Inc.

Released June 23, 2014

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