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Just Diagnosed
What is Chromosome 18 Condition?
Why Join The Registry?
New Parents
Clinical Management Guides
Get To Know Us
What is the C18 Registry
International Affiliates
Starfish Story
Clinical Research Center
Scientific Medical Advisory Board
Clinical Research Center Video Library
Board Of Directors
Staff and Volunteers
Volunteers
Job Board
Student and Intern Experience
Annual Reports
C18 Conditions
Clinical Research Center Video Library
18p-
18p- Basics
Diagnosed of 18p
Genetic Basis of 18p-
Genes of Interest on 18p
18p- Genes Under Investigation
18p-: Health Concerns
Clinical Dosage Deletion Map
18p- Families
18p- Video Library
18q
Distal 18q-
Distal 18q- Basics
Genetic Basis of Distal 18q-
18q-: Diagnosis
Distal 18q-: Health Concerns
Genes of Interest on distal 18q
Clinical Dosage Deletion Map
Proximal 18q-
Proximal 18q- Basics
Genetic Basis of Proximal 18q-
18q-: Proximal Diagnosis
Proximal 18q-: Health Concerns
Genes of Interest on Proximal 18q
Clinical Dosage Deletion Map
18q- Families
18q- Video Library
Tetrasomy 18p
Genetic Basis of Tetrasomy 18p
Diagnosis of Tetrasomy 18p
Tetrasomy 18p: Health Concerns
Clinical Dosage Duplication Map
Tetrasomy 18p Families
Tetrasomy 18p Video Library
Trisomy 18
Trisomy 18 Genetic Background & Basis
Clinical Dosage Duplication Map
Trisomy 18 Families
Trisomy 18 Video Library
Ring 18
Ring 18 Basics
Genetic Basis of Ring 18
Diagnosis of Ring 18
18p-: Health Concerns
Distal 18q-: Health Concerns
Genes of Interest on 18p
Genes of Interest on distal 18q
Clinical Dosage Deletion Map
Ring 18 Families
Ring 18 Syndrome Video Library
Pitt Hopkins Syndrome
Pitt Hopkins Syndrome
Pitt Hopkins Families
Other Conditions
Other Conditions
Mosaicism
Resources
Member Resources
Professional Resources
Medical Professional Resources
Educator Resources
Newsletters
Registry Newsletters
Clinical Research Center Newsletters
C18 Community Powerpoint
Blog
Social Media
Find Your Coordinator!
C18 in the Media
Legal & Financial
I-990 Federal Tax Documents
Find Doctors near you
Memorial Wall
Events
Calendar of Events
Camp 2026
Dash 2026
Conference 2026
Power of 18
Golf 2026
World C18 Day
Become a Member
Membership Benefits
Ways To Give
Why Donate?
Donate
Year-End Giving
Donate Online
Monthly Giving
Legacy Society
Social Media Fundraisers
Facebook Fundraisers
Instagram Fundraisers
Vehicles Donations
Donor Advised Funds
Donate Crypto
Just Diagnosed
What is Chromosome 18 Condition?
Why Join The Registry?
New Parents
Clinical Management Guides
Get To Know Us
What is the C18 Registry
International Affiliates
Starfish Story
Clinical Research Center
Scientific Medical Advisory Board
Clinical Research Center Video Library
Board Of Directors
Staff and Volunteers
Volunteers
Job Board
Student and Intern Experience
Annual Reports
C18 Conditions
Clinical Research Center Video Library
18p-
18p- Basics
Diagnosed of 18p
Genetic Basis of 18p-
Genes of Interest on 18p
18p- Genes Under Investigation
18p-: Health Concerns
Clinical Dosage Deletion Map
18p- Families
18p- Video Library
18q
Distal 18q-
Distal 18q- Basics
Genetic Basis of Distal 18q-
18q-: Diagnosis
Distal 18q-: Health Concerns
Genes of Interest on distal 18q
Clinical Dosage Deletion Map
Proximal 18q-
Proximal 18q- Basics
Genetic Basis of Proximal 18q-
18q-: Proximal Diagnosis
Proximal 18q-: Health Concerns
Genes of Interest on Proximal 18q
Clinical Dosage Deletion Map
18q- Families
18q- Video Library
Tetrasomy 18p
Genetic Basis of Tetrasomy 18p
Diagnosis of Tetrasomy 18p
Tetrasomy 18p: Health Concerns
Clinical Dosage Duplication Map
Tetrasomy 18p Families
Tetrasomy 18p Video Library
Trisomy 18
Trisomy 18 Genetic Background & Basis
Clinical Dosage Duplication Map
Trisomy 18 Families
Trisomy 18 Video Library
Ring 18
Ring 18 Basics
Genetic Basis of Ring 18
Diagnosis of Ring 18
18p-: Health Concerns
Distal 18q-: Health Concerns
Genes of Interest on 18p
Genes of Interest on distal 18q
Clinical Dosage Deletion Map
Ring 18 Families
Ring 18 Syndrome Video Library
Pitt Hopkins Syndrome
Pitt Hopkins Syndrome
Pitt Hopkins Families
Other Conditions
Other Conditions
Mosaicism
Resources
Member Resources
Professional Resources
Medical Professional Resources
Educator Resources
Newsletters
Registry Newsletters
Clinical Research Center Newsletters
C18 Community Powerpoint
Blog
Social Media
Find Your Coordinator!
C18 in the Media
Legal & Financial
I-990 Federal Tax Documents
Find Doctors near you
Memorial Wall
Events
Calendar of Events
Camp 2026
Dash 2026
Conference 2026
Power of 18
Golf 2026
World C18 Day
Become a Member
Membership Benefits
Ways To Give
Why Donate?
Donate
Year-End Giving
Donate Online
Monthly Giving
Legacy Society
Social Media Fundraisers
Facebook Fundraisers
Instagram Fundraisers
Vehicles Donations
Donor Advised Funds
Donate Crypto
I-990 Federal Tax Documents
