relatively common symptoms associated with other diseases. Due to the spatiality and verity of rare diseases,
research needs to be global to ensure that policy-making experts, healthcare providers, basic researchers, and
clinicians are connected. In addition to that clinical trials are multinational and that patients can benefit from the
pooling of data and resources across borders. Initiatives such as the European Reference Networks, the
International Rare Disease Research Consortium and the EU Framework Programme for Research and
Innovation Horizon 2020 support international level collaborative research on rare diseases.
The incidence of rare diseases globally and specific to India
The major concern in rare diseases is that it cannot be determined by a universal definition. However, the
importance of having a consistent definition is well acknowledged. Adopting a standard definition of rare
disease is a pre-requisite for public policy development. There are approximately 350 million patients affected
by about 7000 known rare diseases. Rough estimates indicate that over 70 million people in India are affected
by rare diseases, many of whom may still not have a diagnosis. Different rare diseases database including
Orphanet database is updated every year to accommodate new diseases that are being reported. Orphanet
database is maintained by the European Union. We do not yet have accurate statistics on the incidence or
prevalence of rare diseases in India. This is mainly because of the lack of definition and more importantly, due
to the lack of diagnostic tools and equipment and systematic data collection systems in India. Half of the rare
diseases are early onset childhood diseases. About 80% of all rare diseases are genetic in origin, most of them
monogenic. The US National Institutes of Health initiatives such as the Undiagnosed Diseases Network (UDN)
and the international rare diseases research consortium (IRDiRC) aim to address this challenge by accelerating
the speed of diagnosis. The goal is to bring the average time to diagnosis down to one year.
Time to time, scientific and patient communities have expressed the need for government initiatives towards
rare diseases. The first attempt to bring together all experts of rare diseases under a common platform was
initiated by Indian National Science Academy (INSA), which conducted the first of the kind rare disease
workshop entitled “To Develop a Scientific Program for Research on Rare Diseases” in 2016, which deliberated
on issues such as definition of “Rare disease,” rare disease awareness, rare disease research avenues, policy
framework for boosting and incentivizing research and development efforts and framing suitable legislation to
ensure involvement of the State in fulfilling the special needs of rare diseases. In the INSA rare disease
workshop (2016), the honourable Drug Controller General of India stated that a policy for accelerated clearance
of orphan drugs and fast-track approval is not in place because government needs clear-cut recommendations
regarding the definition of rare disease, mechanism for fast-track approval (e.g., waiver of a specific phase in
orphan drug clinical trial). He again stated that genetic differences in Indian population warrant studies from
India, rather than using data from studies in other countries. He also invited for expert suggestions on the need
of changes in the drugs and cosmetic act to meet the requirements of research in rare disease.[1]
The Genetic and Rare Diseases Information Center (GARD) is a program of the National Center for Advancing
Translational Sciences (NCATS) and is funded by two associate institutions of the National Institutes of Health
(NIH): NCATS and the National Human Genome Research Institute (NHGRI). GARD provides the public with
access to current, reliable, and easy-to-understand information about rare or genetic diseases in English or
Spanish. NORD’s database provides brief introductions for patients and their families about more than 1,200
rare diseases. This is not a comprehensive database considering the fact that there are nearly 7,000 diseases
considered rare in the U.S.
RARE List™
The RARE List™ comprises approximately 7,000 different rare diseases and disorders affecting more than 300
million people worldwide. Some common diseases are included on the RARE List™ because in the United
States one of the primary criteria for recognizing a disease as rare is the prevalence of the disease fewer than
200,000 cases. Diseases such as malaria are quite common in some parts of the world but are considered rare in
the United States. Other diseases such as Cancer or Alzheimer's are not rare diseases, but certain forms of these
diseases are considered rare.[2]