FROM:   MERCK & CO., INC.
        Whitehouse Station, N.J.
        DR. Jeffrey L. Sturchio--(908) 423-3981
        John Doorley--(908) 423-4081


FOR IMMEDIATE RELEASE



FIRST INSTALLMENT OF MERCK GENE INDEX DATA RELEASED TO PUBLIC
DATABASES: COOPERATIVE EFFORT PROMISES TO SPEED SCIENTIFIC
UNDERSTANDING OF THE HUMAN GENOME


Whitehouse Station N.J. February 10, 1995--Merck & Co., Inc., and Washington 
University today announced the public release of the first 15,000 expressed 
human gene sequences from their collaborative effort to identify cDNA clones 
for expressed human genes, and to make the sequence data and related physical 
clones broadly available as research tools.  This project, known as the Merck 
Gene Index since its inception less than five months ago, is expected to 
produce 300,000 human gene sequences over the next 18 months.  Washington 
University will rapidly report the sequence data to public databases for use 
on an unrestricted basis by interested researchers worldwide.

   "The Merck Gene Index has tremendous promise for catalyzing 
interdisciplinary research on the human genome," said Dr. Thomas Caskey, 
Senior Vice President, Basic Research, of the Merck Research Laboratories, 
and President of the Human Genome Organization.  "Using the Sequence 
information Merck is making available in collaboration with Washington 
University and other centers in genomics and bioinformatics, researchers will 
find new ways to understand gene expression, which will lead ultimately to 
new therapies for diseases as yet unconquered. This kind of cutting-edge 
research is what drew me to Merck, and what makes it such an exciting 
research environment."
 
   The Merck Gene Index is a broad collaborative effort, coordinated by Dr. 
Alan Williamson, Vice President, Research Strategy Worldwide, and Keith O. 
Elliston, Associate Director, Bioinformatics, of the Merck Research 
Laboratories. Dr. Greg Lennon's laboratory at the Lawrence Livermore National 
Laboratory (Livermore, California) has been supplying arrayed cDNA clones to 
Dr. Robert Waterston's laboratory (the Genome Sequencing Center) at the 
Washington University School of Medicine (St. Louis, Missouri) for 
sequencing.  "Our collaborators have worked together to expedite the project, 
while maintaining the highest standards of quality," said Merck's Keith 
Elliston, "which has enabled us to make excellent progress towards providing 
a much needed public resource for research on the human genome."
  
   The sequence data are being submitted to the Expressed Sequence Tag (EST)
division of GenBank on a regular basis for immediate distribution. (GenBank, 
built and distributed by the National Center for Biotechnology Information
(NCBI) is a central repository of publicly-available gene sequence 
information, widely known and heavily used by researchers in government, 
academe, and industry).  It is expected that nearly 4,000 individual 
sequences will be submitted to the database each week; as the operation 
matures, sequence submissions will be made on a daily basis.  No one will 
have advance access to - nor can they delay or restrict the release of - any 
of the sequence data from Washington University.  This includes Merck 
researchers, who will only gain access to the data via the same public 
databases available to all interested researchers.

   According to Dr. Mark Boguski of the NCBI, the sequence information will 
be distributed to GenBank's international collaborators, the European 
Bioinformatics Institute (Cambridge, England) and the DNA Data Bank of Japan 
(Mishima, Japan), as well as to the National Center for Genome Resources 
(Santa Fe, New Mexico) and to the public within 48 hours after receipt of the 
data. The data, which will be available on the Internet from the NCBI's ftp
(ncbi.nlm.nih.gov) and Worldwide Web (http://www.ncbi.nlm.hih.gov/) servers, 
are free of all restrictions.  Commented Dr. Francis S. Collins, Director of 
the National Center for Human Genome Research at the National Institutes of 
Health, "The release of this first installment of cDNA sequence tags into 
GenBank is welcome news indeed.  The rate of sequence production and the fact 
that the information will be freely available has been greeted with much 
enthusiasm in the scientific community.  In fact, an international consortium 
has already formed to initiate the important task of mapping these gene 
sequences to their proper locations on human chromosomes.  We can now look 
forward expectantly to the positioning of a large proportion of the human 
expressed genes on the human physical map in the next two or three years, 
which will greatly aid the critical task of identifying genes which 
predispose to human illness."

   The minimal set of cDNA clones representing the unique identified human 
genes, the index to the genome, will also be made available by appropriate 
commercial and non-profit organizations, as PCR products gridded onto nylon 
membranes, and as individual clones and sets of clones in 384-well plates in 
the future.  These resources will then be distributed at a reasonable cost 
via established networks to researchers who wish to do sequencing and mapping 
of individual gene or sets of genes, or for any other research purpose.

   Merck's decision to submit the Merck Gene Index sequence data to GenBank 
is consistent with the goal (announced on September 28, 1994, when these 
plans were first disclosed) of gaining the widest possible dissemination of 
this information.  As Merck's Dr. Alan Williamson notes, "Merck's approach is 
the most efficient way to encourage progress in genomics research and its 
commercial applications:  by giving all research workers unrestricted access 
to the resources of the Merck Gene Index, the probability of discovery will 
increase.  The basic knowledge thus gained will lead ultimately to new 
therapeutics for a wide range of disease--while providing opportunities--and 
preserving incentives--for investment in future gene-based product 
development."  It is expected that a number of value-added database efforts 
by biomedical researchers around the world will also make use of the Merck-
funded sequence information to facilitate genome sequencing, gene mapping, 
and gene expression studies.


        Merck & Co., Inc., headquartered in Whitehouse Station, N.J., is a 
worldwide research-intensive company that discovers, develops, produces, and 
markets human and animal health products and services.  Its Medco unit is the 
leading pharmacy benefits management company.


        Washington University School of Medicine is among the premier medical 
schools and research institutions in the world.  The University is on of the 
to five recipients of research funding from the National Institutes of 
Health.  The Genome Sequencing Center was established in August 1993 and, 
with a $29.7 million grant from the National Institutes of Health, it is 
sequencing the genomes of two model organisms, the nematode C. elegans and 
the yeast S. cerevisiae.

        Lawrence Livermore National Laboratory, managed by the University of 
California for the U.S. Department of Energy, conducts research important to 
national goals.  Current programs include national defense and controlling 
the spread of nuclear weapon, as well as research in energy, biomedicine, and 
the environment.  The Laboratory has a long-standing commitment to enhance 
the nation's economic competitiveness and to support education.

        The National Center for Biotechnology Information is a unit of the 
National Library of Medicine, located on the campus of the U.S. National
Institutes of Health in Bethesda, Maryland.


ADDITIONAL PRESS CONTACTS

Lawrence Livermore National Laboratory:
        Mr. Jeffrey Sketchley, (510) 422-0147

National Center for Biotechnology Information/National Library of Medicine
        Mr. Robert Mehnert, (301) 496-6308

Washington University School of Medicine
        Ms. Linda Sage, (314) 362-8253