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C18 Overview
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What is Chromosome 18 Condition?
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
Tetrasomy 18p Basics
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
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Just Diagnosed
Why Join The Registry?
C18 Overview
New Parents
Events Calendar
Clinical Management Guides
Get To Know Us
What is the C18 Registry
Clinical Research Center
Clinical Research Center Video Library
Scientific Medical Advisory Board
Board Of Directors
Meet the Team
Annual Reports
Starfish Story
Volunteers
Job Board
Student and Intern Experience
International Offices
C18 Conditions
Clinical Research Center Video Library
What is Chromosome 18 Condition?
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
Tetrasomy 18p Basics
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
C18 Community Powerpoint
Member Resources
Newsletters
Registry Newsletters
Clinical Research Center Newsletters
Blog
Social Media
Find Your Coordinator!
C18 in the Media
Legal
Memorial Wall
Medical Professional Resources
Educator Resources
Find Doctors near you
I-990 Federal Tax Documents
Events
Calendar of Events
Camp 2026
Dash 2026
Conference 2026
Power of 18
Golf 2025
World C18 Day
Year-End Giving
Become a Member
Membership Benefits
Free Membership Here
Ways To Give
Why Donate?
Donate Online
Donate
Chromosome 18 Champion
Legacy Society
Social Media Fundraisers
Facebook Fundraisers
Instagram Fundraisers
Vehicles Donations
Donor Advised Funds
Donate Crypto
Welcome to Chromosome 18 Events
« All Events
18q- Awareness Day!
January 18
«
New Family Resource & Intro Zoom Call
Facebook live with the Sheppard Family
»
January 18th is 18q- Day!
Add to calendar
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Details
Date:
January 18
Come Join US!
