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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
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      • Volunteers
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    • 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
      • 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
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        • I-990 Federal Tax Documents
      • Find Doctors near you
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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
      • 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
    • 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

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The information provided on this website is for general educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment.