Encysive Pharmaceuticals Reports Second Quarter 2006 Financial Results

Conference Call Scheduled for Today at 8:00 a.m. Eastern


HOUSTON, Aug. 7, 2006 (PRIMEZONE) -- Encysive Pharmaceuticals (Nasdaq:ENCY) today announced financial results for the second quarter ended June 30, 2006.

Second Quarter Financial Overview


 -- Revenues in the second quarter of 2006 were $3.7 million, as
    compared to $3.0 million for the second quarter of 2005.  This
    increase was due to higher royalties on sales of Argatroban by
    GlaxoSmithKline.  Royalty income increased 23% to $3.3 million, as
    compared to $2.7 million earned in the same period last year.

 -- For the second quarter of 2006, the Company reported a net loss of
    $28.0 million, or $0.48 per basic and diluted share, compared to a
    net loss of $19.2 million, or $0.33 per basic and diluted share,
    for the second quarter of 2005.  The increased loss in the current
    quarter, as compared to the second quarter of 2005, was primarily
    the result of the investment in the U.S. sales force and increased
    commercialization-related expenses.

 -- Cash, cash equivalents and accrued interest at June 30, 2006, were
    $75.4 million, compared to $127.9 million at December 31, 2005, and
    $100.5 million at March 31, 2006. Due to the delay in the approval
    of THELIN(tm) (sitaxsentan sodium), the Company now anticipates the
    need to raise additional cash and is exploring various financing
    options.

Recent Company Events


 -- On May 25, 2006, the Company submitted its complete response to the
    U.S. Food and Drug Administration (FDA), to address the issues and
    concerns detailed in the March 24, 2006, approvable letter for
    THELIN.  The FDA, in turn, designated the review as a Class 1
    resubmission.  A new Prescription Drug User Fee Act (PDUFA) target
    action date of July 24, 2006, was established.

 -- On July 24, 2006, Encysive received a second approvable letter from
    the FDA for THELIN.  One of the substantive items raised in the
    March 24 approvable letter remains unresolved.  The FDA 
    acknowledged that the unresolved item is a matter of judgment and 
    expressed a willingness to consider new arguments to address this 
    remaining item.  The FDA again offered the alternative of 
    conducting additional clinical work.  The Company has initiated 
    active discussions with the Agency, and is in the process of 
    setting up a face-to-face meeting with the goal of attempting to 
    resolve the remaining item.

 -- On June 2, 2006, the Company announced that the Committee for
    Medicinal Products for Human Use (CHMP) of the European Agency for
    the Evaluation of Medicinal Products (EMEA) issued a positive
    opinion recommending the approval of THELIN(tm) 100 mg tablets as 
    a once daily oral treatment for patients with pulmonary arterial
    hypertension.  The CHMP's positive opinion will be considered by 
    the European Commission, and a final decision regarding marketing
    approval for THELIN is expected within approximately 90 days from
    the opinion date.  Under the EMEA's centralized licensing 
    procedure, if approved, Encysive would be granted marketing 
    authorization for THELIN in all 25 member states of the European 
    Union.

 -- In preparation for the launch of THELIN in Europe, Encysive has
    established a European commercial organization, headquartered in
    London.  Sales and marketing organizations are currently being
    developed in the United Kingdom, Germany and France, with other
    countries to follow.

 -- The Company presented new THELIN data from the STRIDE-2X trial at
    the European League Against Rheumatism (EULAR) Annual European
    Congress of Rheumatology in June 2006.

Upcoming Presentations


 -- Sept. 2-6        World Congress of Cardiology
                     Barcelona, Spain

 -- Sept. 2-6        European Respiratory Society 16th Annual Congress
                     Munich, Germany

 -- Sept. 11-14      ThinkEquity Partners 4th Annual Growth Conference
                     San Francisco(a)

 -- Sept. 25-28      UBS Global Life Sciences Conference
                     New York City(a)

 (a) Meeting will be webcast at www.encysive.com

Conference Call Information

Encysive Pharmaceuticals will host a conference call to discuss second quarter 2006 earnings today at 8:00 a.m. ET. You may access the call either through the call-in number below or through the audio webcast. Please dial in 15 minutes prior to the start time to allow for call processing. The access number for the call is:


 Number: (612) 332-0226
 Passcode: Encysive Pharmaceuticals

This call is being webcast and can be accessed via Encysive's web site at www.encysive.com.

A replay of the webcast will be available on the Company's web site through September 7, 2006. Additionally, a replay of the call will be available from Monday, August 7, 2006, at 11:30 a.m. ET until Thursday, August 10, 2006, at 11:59 p.m. ET. The call replay can be accessed by calling:


 Number:  (320) 365-3844
 Access Code: 838078

About Encysive Pharmaceuticals

Encysive Pharmaceuticals Inc. is a biopharmaceutical company engaged in the discovery, development and commercialization of novel, synthetic, small molecule compounds to address unmet medical needs. Our research and development programs are predominantly focused on the treatment and prevention of interrelated diseases of the vascular endothelium and exploit our expertise in the area of the intravascular inflammatory process, referred to as the inflammatory cascade, and vascular diseases. To learn more about Encysive Pharmaceuticals please visit our web site: www.encysive.com.

The Encysive Pharmaceuticals Inc. company logo can be found at http://media.primezone.com/prs/single/?pkgid=843

This press release contains "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward-looking statements are subject to certain risks, trends and uncertainties that could cause actual results to differ materially from those projected. Among those risks, trends and uncertainties are our estimate of the sufficiency of our existing capital resources, our ability to raise additional capital to fund cash requirements for future operations, timelines for initiating new clinical trials, planned announcements of clinical data, the possibility of obtaining regulatory approval, our ability to manufacture and sell any products, potential drug candidates, their potential therapeutic effect, market acceptance or our ability to earn a profit from sales or licenses of any drug candidate, our ability to discover new drugs in the future, and our ability to establish future collaborative arrangements. In particular, careful consideration should be given to cautionary statements made in the various reports Encysive, including as Texas Biotechnology Corporation, has filed with the Securities and Exchange Commission. Encysive undertakes no duty to update or revise these forward-looking statements.


             ENCYSIVE PHARMACEUTICALS INC. AND SUBSIDIARIES
                    UNAUDITED SELECTED FINANCIAL DATA
              Amounts in thousands (except per share data)

                   Consolidated Summary of Operations

                          Three Months Ended       Six Months Ended
                               June 30,                June 30
                        ---------------------   ---------------------
                           2006        2005        2006        2005
                         --------    --------    --------    --------
 Revenues                 $  3,662    $  2,976    $  7,223    $  5,462
 Operating expenses:
   Research and
    development             14,676      17,366      33,055      33,681
   Sales and marketing      11,767       3,263      21,603       4,380
   General and
    administrative           5,364       3,605      11,106       6,199
                          --------    --------    --------    --------
     Total expenses         31,807      24,234      65,764      44,260
                          --------    --------    --------    --------
     Operating loss        (28,145)    (21,258)    (58,541)    (38,798)
 Investment income           1,085       1,339       2,384       1,933
 Interest expense             (978)       (976)     (1,958)     (1,147)
                          --------    --------    --------    --------
     Loss from
      continuing
      operations           (28,038)    (20,895)    (58,115)    (38,012)
     Income from
      discontinued
      operations                --       1,661          --       1,335
                          --------    --------    --------    --------
     Loss before
      cumulative effect
      of change in
      accounting
      principle           $(28,038)   $(19,234)   $(58,115)   $(36,677)
 Cumulative effect of
  change in accounting
  principle                     --          --         107          --
                          --------    --------    --------    --------
     Net loss             $(28,038)   $(19,234)   $(58,008)   $(36,677)
 Net loss per common
  share
   Basic and diluted      $  (0.48)   $  (0.33)   $  (0.99)   $  (0.63)
                          ========    ========    ========    ========
 Weighted average
  common shares
   Outstanding: basic
    and diluted             58,465      57,895      58,368      57,776
                          ========    ========    ========    ========


                 Condensed Consolidated Balance Sheets
                 -------------------------------------

                                                 June 30,  December 31,
                                                  2006        2005
                                                ---------  ----------
 Assets:
   Cash, cash equivalents and
   Accrued interest                               $ 75,417    $127,913
   Other assets                                     17,727      18,789
                                                  --------    --------
       Total assets                                 93,144     146,702
                                                  ========    ========

 Liabilities and stockholders' deficit
   Current liabilities                              26,664      26,151
   Deferred revenue, long-term                         642       1,286
   Long-term debt                                  130,000     130,000
                                                  --------    --------
       Total liabilities                           157,306     157,437
   Stockholders' deficit                           (64,162)    (10,735)
                                                  --------    --------
       Liabilities and stockholders' deficit      $ 93,144    $146,702
                                                  ========    ========


            

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