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PWSA (USA)’s First International Hyperphagia Conference was a Big Success! 

By: Janalee Heinemann, PWSA (USA) Director of Research & Medical Affairs

Many of you will remember me writing about how impressed I have been with the similarities between the hyperphagia (the extreme unsatisfied drive to consume food) in Prader-Willi syndrome (PWS) and some of the other rare disorders.   The difference being that with the other syndromes, it is not as universal as with PWS, but often is just as dramatic when it does present.    With the blessing of the board, Jim Kane and I decided to co-coordinate this first ever conference bringing experts from the rare disorders together along with NIH staff, and pharmaceutical companies.  Our scientific co-chairs were Dr. Tony Goldstone from the UK and Dr. Ann Scheimann from Baltimore, MD.  The speakers who specialize in the rare disorders and presented on the hyperphagia component of their syndrome were:

                 Prader-Willi syndrome  Tony Goldstone, M.D., Ph.D., Imperial College London, UK

                Alström syndrome                    Pietro Maffei, M.D., Padua University Hospital, Italy

                WAGR syndrome         Joan Han, M.D., Unit on Growth and Obesity, NICHD, NIH

                Fragile X syndrome         Randi Hagerman, M.D., MIND Institute of California

                Bardet-Biedl syndrome  Leslie Bieseker, M.D., National Human Genome Research Inst., NIH

Our keynote speakers who presented on the overall topic of obesity, hunger and hyperphagia were from the Pennington Biomedical Research Center, LA and are internationally recognized for their research in this area:

George A. Bray, M.D., Boyd Professor, Chief, Division of Clinical Obesity and Metabolism

Hans-Rudolf Berthoud, Ph.D., Professor, Department of Neurology and Nutrition

The afternoon involved a series of eight simultaneous round table discussions and participants were able to rotate throughout the afternoon to three tables each.   Three main questions were posed to each group.  The goal was to learn about the key components of hyperphagia from each other and how we can enhance collaboration in research. New ideas were generated for how to advance research on hyperphagia, hunger and obesity. Areas identified by the groups requiring more research included:

  • Involvement of dopamine and reward systems in the brain
  • Salivary secretion differences, taste and smell studies among the uncommon genetic  disorders with hyperphagia
  • Looking at the genes involved in addiction
  • Comparing hypothalamic function and gene expression among the disorders

Examining  evidence of ciliary dysfunction in PWS including mouse models

  • Within the contiguous genes syndromes  identify single genes that may be responsible for increased appetite
  • Identify gene targets for sno RNAs (e.g. HBII-85; HBII-52)
  • Study the phenotype of BDNF gene promoter knockout mice
  • Better understanding of cue-related behavior.
  • Identifying critical periods in the development of obesity with progression to hyperphagia from failure-to-thrive.
  • Common questionnaire across all disorders addressing and characterizing hyperphagia
  • Compare and contrast gut hormone levels among the disorders

Improved understanding of hyperphagia and obesity in these rare disorders and mapping the pathophysiology may lead to an increased understanding of obesity in the general population.  Rare syndromes can teach us about the architecture of eating behavior.  We received very positive feedback from attendees from the various disorders and backgrounds and are delighted it was a success.  PWSA (USA) is offering a Best Idea Grant (BIG) of up to $100,000 available only to those who attended the conference.   For more information on the grant and the conference go to www.hyperphagia.org

A Sampling of Comments from Those Who Were There

congratulations on a superbly organized and very interesting meeting.
~ George Bray,keynote speaker 

I found the roundtable discussions were very animated and interesting, and I learned a lot myself. I really hope this well-planned event will be a boost to research on these diseases.
~ Hans-Rudi Berthoud, keynote speaker

The organizers have done a great job sending out a lot of background information and providing meeting prep materials!
~ Chris Herold 

The whole event turned out better than I even imagined!  Great speakers and a great forum for collaboration, great food, incredible hotel…It takes such a huge effort to pull this kind of thing off and I feel like everyone on the team gave 110% and made it seem effortless. 
~Kerry Headley 

conference was fantastic...no glitches, no complaints I really look forward to seeing what people came up with as important and salient for study…"GREAT JOB" in putting on a conference that finally figured out how to get people working together.
~Jim Gardner 

 I particularly enjoyed learning more about other disorders that have hyperphagia as a feature, and I think that researchers in those areas had the opportunity to learn more about PWS.  Thank you for inviting FPWR to participate.
~ Theresa V. Strong, Ph.D.

 

edited: 02/24/2010

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