rare chromosome disorder support group registered charity no. 1110661 the unique network supporting...
TRANSCRIPT
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
The Unique Network
Supporting families affected by Rare Chromosome Disorders
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Why we are here today
• To tell you a little bit about the charity Unique, and how we joined
• What challenges families affected by a rare chromosome face
• How Unique helps families
• But first, a guide to what a rare chromosome is….
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
What are chromosomes
• The human body is made up of billions of individual CELLS, each cell contains a NUCLEUS. Inside the nucleus are the CHROMOSOMES, which contain GENES
• We each usually have 23 pairs of chromosomes in every cell
• Chromosome 1 is the largest, with 22 the smallest. The 23rd pair are the sex chromosomes (males = XY, females = XX)
• Of the 23 pairs of chromosome in each cell, one member of each pair is usually inherited from the father and the other member from the mother
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
What are rare chromosome disorders?
• When changes or mutations in chromosomes are so small they affect the DNA coding in a single gene – these are called single gene disorders e.g. Cystic Fibrosis
• Chromosome disorders usually involve loss or gain of copies of many whole genes and can be classified into two groups:
– Numerical disorders– Structural disorders
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
What are numerical chromosome disorders?
• Where one extra complete chromosome is present it is known as a Trisomy. – e.g. Trisomy 21 is more commonly known as Down Syndrome
(where there are 3 copies of chromosome 21)
• Two extra complete copies of a chromosome is known as a Tetrasomy
• If a complete chromosome is missing, this is known as a Monosomy.
• If only some of the body’s cells carry the extra sets of chromosomes, then this is known as Mosaicism
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
What are structural chromosome disorders?
• Structural disorders occur because of breakages in a chromosome.
• They can occur spontaneously (commonly known as DE NOVO) or they can be inherited from a parent.
• Types of structural chromosome disorder include:– Duplication i.e. an extra copy of a segment of a chromosome – Triplication i.e. two extra copies of a segment – Partial Deletion i.e. loss of a segment– Balanced or unbalanced translocations i.e. where segments of two
or more chromosomes swap places or are lost and/or gained, respectively
– Ring chromosomes i.e. where both ends of a chromosome are lost and the remaining ends stick together to form a Ring
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
An example of chromosome G-banding
Notice part of chromosome 18 is missing
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
My Story in 60 seconds…..
• About me and my child
• How we were told
• How Unique has helped us
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Rare chromosome abnormalities present extraordinary challenges to
families - 1
Rarity – “individually rare but collectively numerous”
• At least 1 in every 200 babies is born with a balanced or unbalanced rare chromosome abnormality (Hook et al. 1992, Jacobs et al. 1992)
• 1 in 1,000 will have physical and/or learning disabilities
Families experience feelings of:– Isolation - Bewilderment– Shock - Desperation– Guilt - Loneliness– Physical & mental stress - Bereavement
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
KARYOTYPES
Karyotypes – how do families describe their child’s chromosome abnormality to other people?Imagine trying to explain what your baby’s disorder is when the only “name” the disorder has is a karyotype like this!
46,XX,t(3;7;12)(3pter->3p12.2::7q31.3::3q25->3p12.2::7q21.2->7q31.3::3q26.3-> 3qter;7pter->7q21.2::12p12.3->12pter;7qter->7q32::3q25->3q26.2::12p12.3->12qter)
More sophisticated analyses like FISH and microarrayCGH bring even greater challenges
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Rare chromosome abnormalities present extraordinary challenges to
families ~ 2
• A complex set of symptoms -learning disability-physical disability-developmental delay-medical issues-unusual facial features-challenging behaviours-mental health problems
• Genetic “time-bomb” -late-onset conditions
• Lack of information
• Multiple professionals involved -co-ordination of services-communication-who breaks the news?
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Rare chromosome abnormalities present extraordinary challenges to
families ~ 3
• Families often break up under the pressure• Mental health and well-being• Stress on the extended family e.g. siblings,
grandparents • Lose friendships and other relationships• Financial and employment difficulties• Lifestyle change
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
How can Unique help?
• Telephone & e-mail helplines• Computerised database• Family linking service• Local contact network• Website with private discussion forum• Regular conference• Newsletter• Family-friendly, medically-verified
information
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Some of our family–friendly material
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Family-friendly Brochures & Factsheets on over 50 rare
chromosome disorders completed
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Unique Membership Growth
0
1000
2000
3000
4000
5000
6000
Membershipnumbers
Lottery grant/Development Officer employed/Website launched
Membershipat September 2007
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Unique Membership Worldwide
Over 5600 member families & professionals representing 6000+ individuals with a rare chromosome abnormality in 69 countries at September 2007
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
How you can help Unique
• The group is run predominantly on a voluntary basis, mainly by parents of children with rare chromosome disorders
• Unique employs 1 full time and 5 part time staff on short term contracts continuation of which depends on our success in applying for grants
• The day to day running of the group is funded by donations, covenants and fundraising activities, so
thank you for your generosity
Rare Chromosome Disorder Support Group
www.rarechromo.orgRegistered Charity No. 1110661
Finding out more about Unique
Visit our website www.rarechromo.org
Email us at [email protected]
Telephone helpline 01883 330766
Write to us at P.O. Box 2189CaterhamSurreyCR3 5GN