CHROMOSOME 22 CENTRAL 
SUPPORT FOR ALL CHROMOSOME 22 RELATED DISORDERS 

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C22C is a parent driven group with more than 1000 members in 45+ countries. 

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MESSAGE BOARDS

• Trisomy 22 and Rare C22 Disorders

• Cat Eye Syndrome 

• 22q Deletions

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LEARN ABOUT

• Chromosome 22 Central

• 22q11 Deletion Syndrome (DiGeorge Syndrome, Velocardiofacial Syndrome)

• Microduplication 22q11 Syndrome

• The 11/22 Translocation (Emanuel Syndrome, partial trisomy 11/22)

• 22q13 Deletion Syndrome (Phelan-McDermid Syndrome)

• Cat Eye Syndrome

• Complete or Full Trisomy 22

• Mosaic Trisomy 22

• Chromosome 22 Ring

• Monosomy 22 Mosaicism 

• Unique Chromosome 22 Disorders

• Books

 NEWSLETTERS

• NOVEMBER 2006
• FEBRUARY 2007 
• MAY 2007 
• SEPTEMBER 2007
• DECEMBER 2007 
• MAY 2008

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Chromosome 22 Central Inc. is a registered Canadian Non-Profit Organization 
and Registered Charity BN# 86009 3665 RR0001, and a Registered US Corporation with Non-Profit Status

MOSAIC TRISOMY 22

Post to the trisomy 22 Message Board

Mosaic trisomy 22 is a rare chromosome disorder in which chromosome 22 is present three time, instead of the usual two times, in some cells of the body. The severity of the disorder can depend on the number of cells in which the extra chromosome 22 is present.

CLINICAL FEATURES MAY INCLUDE:

• microcephaly
• abnormal ears
• webbed neck
• cadiac abnormalities
• long fingers
• kidney problems (missing, extra, or underdeveloped kidneys)
• growth retardation
• shortened limbs
• mental delay
• hemidystrophy (abnormal development of each side of the body
• drooping eyelids
• elbow malformations
• abnormal or/missing finger/toe nails
• absent ovaries/fallopian tubes
• undeveloped testes or ovaries
• this is not a complete list, other abnormalities can be present

• Click here for a more extensive list of findings.
• LIST OF MOSAIC TRISOMY 22 REFERENCE ARTICLES
• ARTICLE FROM UBC

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USA members for DONATIONS Please forward a cheque or money order to our US HEAD OFFICE so that you can obtain a tax receipt.

Head Office - for ALL inquiries: Chromosome 22 Central, c/o Stephanie St-Pierre, 237 Kent Avenue, Timmins, Ontario, Canada P4N 3C2 
tel/fax: (705) 268-3099, EMAIL:  steph.stpierre@gmail.com

US Head Office - donations only: Chromosome 22 Central, c/o Murney Rinholm, 7108 Partinwood Drive, Fuquay-Varina, North Carolina, 27526  USA, 
tel (919) 567-8167, EMAIL: bgr@nc.rr.com