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Company contacts:

Savient Pharmaceuticals, Inc.                           Cytogen Corporation
Jack Domeischel, 732-565-4716                           Media/Investors contact:
jdomeischel@savientpharma.com                           Jonathan Fassberg
                                                        The Trout Group
                                                        (212) 477-9007 x16

 CYTOGEN AND SAVIENT FINALIZE EXCLUSIVE DISTRIBUTION AGREEMENT FOR SOLTAMOX(TM)

             The first oral liquid tamoxifen in the U.S. represents
          a new option for women with breast cancer including patients
                  unable to tolerate solid oral dosage forms.

PRINCETON  AND EAST  BRUNSWICK,  N.J.,  (APRIL 24, 2006) -- Cytogen  Corporation
(NASDAQ:  CYTO) and Savient  Pharmaceuticals  (NASDAQ: SVNT) announced today the
execution of a  distribution  agreement  granting  Cytogen  exclusive  marketing
rights for SOLTAMOX(TM)  (tamoxifen citrate) in the United States.  SOLTAMOX,  a
cytostatic  estrogen  receptor  antagonist,  is the first oral  liquid  hormonal
therapy  approved in the U.S. It is indicated for the treatment of breast cancer
in adjuvant and  metastatic  settings and to reduce the risk of breast cancer in
women with ductal carcinoma in situ (DCIS) or with high risk of breast cancer.

"We are extremely pleased to finalize our exclusive  distribution agreement with
Savient, which expands Cytogen's established commercial presence in the oncology
therapeutic  arena,"  stated  Michael D. Becker,  president and chief  executive
officer  of  Cytogen.  "This  is  central  to our  strategy  of  leveraging  the
effectiveness   of  our  existing  U.S.  sales  network  by  supplying  it  with
attractive,  new, IP-protected  products that represent  significant  commercial
opportunities in relevant specialist therapeutic areas."

Cytogen will pay an upfront licensing fee of $2 million to Savient and will also
pay additional contingent  sales-based milestone payments totaling $4 million to
Savient and its wholly owned subsidiary,  Rosemont  Pharmaceuticals Ltd. Savient
and Rosemont will also receive royalties on net sales of SOLTAMOX. Additionally,
Cytogen has entered into a supply  agreement  with Rosemont for the  manufacture
and supply of  SOLTAMOX.  Cytogen  expects to launch  SOLTAMOX  during the third
quarter of 2006. HSBC Securities (USA) Inc. acted as an advisor to Cytogen.

"We are very pleased to have  finalized  the exclusive  distribution  and supply
agreements for SOLTAMOX with Cytogen," said Christopher  Clement,  president and
chief executive officer of Savient.  "For Savient, this is another demonstration
of  our  momentum  in  reinforcing   and  refining  our  focus  as  a  specialty
pharmaceutical  company.  The  introduction  of  SOLTAMOX  into the U.S.  market
provides a sound platform for what we hope will be many more oral liquid product
entries  by our  Rosemont  operation.  We  believe  that  with  its  established
commercial  infrastructure  and demonstrated  ability to maximize niche oncology
product  opportunities,  Cytogen is the right company to take full  advantage of
this product  opportunity  and bring this important  option to the many patients
who rely on oral formulations to treat their disease."

SOLTAMOX is a product of Rosemont  Pharmaceuticals  Ltd., Savient's wholly owned
subsidiary based in Leeds,  United Kingdom.  SOLTAMOX  received U.S.  regulatory
approval in October 2005 and is licensed in





the United Kingdom,  Ireland and Germany.  SOLTAMOX is a registered trademark of
Savient Pharmaceuticals, Inc.

About Hormone Therapy in Breast Cancer

Estrogen  is known to promote the growth of  approximately  two thirds of breast
cancers that contain estrogen or progesterone receptors. Breast cancer treatment
often involves agents designed to block the effect of estrogen or lower estrogen
levels.  Tamoxifen,  the most commonly used anti-estrogen  drug, is administered
daily in pill form.  It has been  shown to reduce the risk of cancer  recurrence
and improve overall survival in all age groups.

About Dysphagia

Swallowing oral medications in the form of pills,  tablets, or capsules presents
a challenge for many individuals with dysphagia, or difficulty swallowing, which
is  estimated  to affect  more than 18 million  adults in the United  States.  A
recent  national  survey  revealed that over 40% of adults  experience  problems
swallowing  pills.  Of adults who  reported  difficulty  swallowing  pills,  14%
disclosed  that they had delayed taking a dose of their  medication,  and 8% had
skipped a dose completely.  Adults who have difficulty swallowing these forms of
oral medications may be less likely to comply with prescribed regimens.

About SOLTAMOX

Currently,  SOLTAMOX is the only liquid hormonal therapy  solution  available in
the United Kingdom, Ireland and Germany, and will soon be launched in the United
States.  The availability of an oral liquid dosing option could allow more women
to benefit from hormonal treatment for estrogen receptor positive breast cancer.

Important safety information for SOLTAMOX

Use of SOLTAMOX  in risk  reduction  setting  (women at high risk for cancer and
women with DCIS) has been shown to cause cancer of the uterus, as well as stroke
and blood clots.  The benefits of SOLTAMOX  outweigh its risks in women  already
diagnosed with breast cancer.  SOLTAMOX  should not be used in women who require
concomitant use of coumarin-type anticoagulant, or in women with history of deep
vein thrombosis or pulmonary  embolus.  Women who are pregnant or plan to become
pregnant should not take SOLTAMOX.  Cataracts and resultant cataract surgery can
also occur more frequently with SOLTAMOX.  The most frequently  reported adverse
reactions with SOLTAMOX were hot flashes and vaginal discharge.

ABOUT CYTOGEN CORPORATION
- -------------------------

Founded in 1980, Cytogen  Corporation of Princeton,  NJ, is a  biopharmaceutical
company  dedicated to improving  the lives of patients with cancer by acquiring,
developing  and  commercializing  innovative  molecules  targeting the sites and
stages of cancer progression.  Cytogen's marketed products include  QUADRAMET(R)
(samarium Sm-153 lexidronam injection),  PROSTASCINT(R) (capromab pendetide) kit
for the  preparation  of Indium  In-111  capromab  pendetide,  and  SOLTAMOX(TM)
(tamoxifen  citrate)  in  the  United  States.  Cytogen's  development  pipeline
consists of therapeutics targeting  prostate-specific membrane antigen (PSMA), a
protein  highly  expressed  on the  surface  of  prostate  cancer  cells and the
neovasculature  of solid  tumors.  Cytogen  also  has  exclusive  United  States
marketing rights to COMBIDEX(R)  (ferumoxtran-10) for all applications,  and the
exclusive  right to  market  and sell  ferumoxytol  (previously  Code  7228) for
oncology applications in the United States. Full prescribing information for the
Company's products is available at  www.cytogen.com or by calling  800-833-3533.
For more  information,  please visit the Company's  website at  www.cytogen.com,
which is not part of this press release.





ABOUT SAVIENT
- -------------

Based in East Brunswick, New Jersey, Savient Pharmaceuticals,  Inc., an emerging
specialty pharmaceuticals company, is engaged in developing,  manufacturing, and
marketing pharmaceutical products that address unmet medical needs in both niche
and  broader  markets.   The  Company's  lead  product  development   candidate,
Puricase(R)  (PEG-uricase),  for the treatment of refractory  gout, has reported
positive Phase 1 and 2 clinical data. Savient's  experienced  management team is
committed to  advancing  its pipeline  and  expanding  its product  portfolio by
in-licensing late stage compounds and exploring  co-promotion and co-development
opportunities that fit the Company's expertise in specialty  pharmaceuticals and
initial  focus  in  rheumatology.   Savient  markets  its  product   Oxandrin(R)
(oxandrolone,  USP) in the United  States.  The Company's  subsidiary,  Rosemont
Pharmaceuticals Ltd., develops,  manufactures, and markets through its own sales
force  oral  liquid   formulations   of   prescription   products   for  the  UK
pharmaceutical  market.  Rosemont's  product portfolio  includes over 100 liquid
formulations  primarily  targeting the geriatric  population.  Savient's product
Mircette(R)  (desogestrel/ethinyl  estradiol  and  ethinyl  estradiol),  an oral
contraceptive,  is  marketed  by its  licensee,  Duramed  Pharmaceuticals,  Inc.
Puricase is a  registered  trademark  of  Mountain  View  Pharmaceuticals,  Inc.
Further   information   on   the   Company   can   be   accessed   by   visiting
www.savientpharma.com.

For Cytogen:

This press release  contains  certain  "forward-looking"  statements  within the
meaning of the Private Securities  Litigation Reform Act of 1995 and Section 21E
of the Securities Exchange Act of 1934, as amended.  All statements,  other than
statements of  historical  facts,  included in this press release  regarding our
strategy,  future operations,  financial  position,  future revenues,  projected
costs,  prospects,  plans  and  objectives  of  management  are  forward-looking
statements.  Such  forward-looking  statements  involve  a number  of risks  and
uncertainties  and investors are cautioned not to put any undue  reliance on any
forward-looking  statement.  There are a number of important  factors that could
cause  Cytogen's  results  to differ  materially  from those  indicated  by such
forward-looking  statements.  In particular,  Cytogen's business is subject to a
number of significant risks, which include,  but are not limited to: the risk of
obtaining  additional  capital;  the risk of obtaining the necessary  regulatory
approvals; the risk of whether products result from development activities;  the
risk of  shifts  in the  regulatory  environment  affecting  sales of  Cytogen's
products such as third-party  payor  reimbursement  issues;  the risk associated
with Cytogen's  dependence on its partners for development of certain  projects;
the risks associated with Cytogen's  strategic  relationships,  as well as other
factors  expressed  from time to time in  Cytogen's  periodic  filings  with the
Securities and Exchange  Commission (the "SEC"). As a result, this press release
should be read in conjunction with Cytogen's  periodic filings with the SEC. The
forward-looking statements contained herein are made only as of the date of this
press  release,  and Cytogen  undertakes no  obligation to publicly  update such
forward-looking statements to reflect subsequent events or circumstances.

For Savient:

This news  release  contains  forward-looking  statements  within the meaning of
Section 21E of the Securities  Exchange Act of 1934. All statements,  other than
statements of historical facts,  included in this report regarding the Company's
strategy, expected future financial position, results of operations, cash flows,
financing  plans,  discovery and development of products,  strategic  alliances,
competitive  position,  plans and objectives of management  are  forward-looking
statements.   Words  such  as  "anticipate,"  "believe,"  "estimate,"  "expect,"
"intend,"   "plan,"   "will"  and  other  similar   expressions   help  identify
forward-looking statements,  although not all forward-looking statements contain
these  identifying  words.  In particular,  the statements  regarding the future
revenues  from  the  Soltamox   transaction  with  Cytogen  are  forward-looking
statements.  These  forward-looking  statements  involve  substantial  risks and
uncertainties and are based on current expectations,  assumptions, estimates and
projections about the Company's business and the biopharmaceutical and specialty
pharmaceutical  industries  in  which  the  Company  operates.  Such  risks  and
uncertainties include, but are not limited to, the Company's ability to complete
the restatement of its financial statements described above on a





timely  basis,  delay or  failure  in  developing  Puricase  and  other  product
candidates;  difficulties of expanding the Company's  product  portfolio through
in-licensing;  introduction of generic competition for Oxandrin; fluctuations in
buying  patterns of wholesalers;  potential  future returns of Oxandrin or other
products;  the  Company's  continuing  to incur  substantial  net losses for the
foreseeable future;  difficulties in obtaining financing;  potential development
of alternative technologies or more effective products by competitors;  reliance
on  third-parties  to  manufacture,  market and distribute many of the Company's
products;   economic,   political  and  other  risks   associated  with  foreign
operations;  risks of  maintaining  protection  for the  Company's  intellectual
property;  risks of an adverse  determination in on-going or future intellectual
property litigation;  and risks associated with stringent government  regulation
of the biopharmaceutical and specialty  pharmaceutical  industries.  The Company
may not actually achieve the plans,  intentions or expectations disclosed in its
forward-looking  statements,  and you should  not place  undue  reliance  on the
Company's  forward-looking  statements.  Actual  results or events  could differ
materially  from  the  plans,  intentions  and  expectations  disclosed  in  the
forward-looking statements that the Company makes. The Company's forward-looking
statements  do not  reflect  the  potential  impact of any future  acquisitions,
mergers, dispositions,  joint ventures or investments that the Company may make.
The  Company  does not  assume  any  obligation  to update  any  forward-looking
statements.


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