ChromosOmics - Database





                                                  - CHROMOSOME  8 -                                                

Cases without
clinical findings
Cases with
clinical findings


most common clinical findings acc to this page* (variable clinical features)

- DD = developmental delay (including intellectual disability)
- growth retardation
- microcephaly
- DYS = dysmorphic facial features

* Orphanet data is not available  as information on supernumerary marker chromosome 8 is listed there)

Cases without or very mild clinical findings (O)

case no.
gender/
age at diagnosis

studied
material

de novo/
inherited

karyotype test
methods

clinical symptoms
Reference
RC/O-
08-
p2?3q2?4/
1-1

male/
7y

PBL
?dn
46,XY,r(8)(p2?3q2?4)
GTG
  microcephaly, DYS, normal intelligence {1, case RC8-3;
172}


Cases with clinical findings (W)

case no.
gender/
age at diagnosis

studied
material

de novo/
inherited

karyotype
test
methods

general clinical symptoms
Reference
RC/W-
08-
p2?3q2?4/
1-1

male/
8y

PBL
?dn
46,XY,r(8)(p2?3q2?4)
GTG DD, microcephaly, growth retardation, DYS
{1, case RC8-1;
170}

RC/W-
08-
p2?3q2?4/
1-1

male/
5.5y

PBL
dn
46,XY,r(8)(p2?3q2?4)
GTG
  DD, microcephaly, growth retardation, DYS {1, case RC8-2;
171}

RC/W-
08-
p2?3q2?4/
1-3

female/
~2y

PBL
?dn
46,XX,r(8)(p2?3q2?4)
GTG
 
DD, microcephaly, growth retardation, DYS
{1, case RC8-4;
173}

RC/W-
08-
p2?3q2?4/
1-4

female/
13y

PBL
?dn
46,XX,inv(7)(p22q11.23),
r(8)(p2?3q2?4)

GTG
DD, microcephaly, growth retardation, DYS
{1, case RC8-5;
174}

RC/W-
08-
p2?3q2?4/
1-5

male/
0.3y

PBL
dn
46,XY,r(8)(p2?3q2?4)
GTG
DD, microcephaly, growth retardation, DYS
{562}
RC/W-
08-
p2?3q2?4/
1-6

male/
prenatal

AF
?dn
46,XY,r(8)(p2?3q2?4)
dynamic mosaicism: - no details provided
GTG
heart defect, DYS
{1371, 1 case - provided by Dr. I. Lurie, Maryland, USA}
RC/W-
08-
p23q24/
1-1

female/
~2.8y

PBL
?dn
46,XX,r(8)(p23q24)
dynamic mosaicism:
47,XX,r(8)×2[?3] for 46,XX,r(8)[12],45,XX,-8[21]
GTG
DD, DYS
{906}
RC/W-
08-
p23q24.1/
1-1

male/
12y

PBL
dn
46,XY,r(8)(p23q24.1)
dynamic mosaicism: ~30%
GTG
DD, microcephaly, growth retardation, DYS
{1, case RC8-6;
175}

RC/W-
08-
p23.3q24.3/
1-1a and 1-1b

male/
6.5y

PBL
mat
46,XY,r(8)(p23.3q24.3)
dynamic mosaicism: ~8% 46,XY,r(8)(p23q24.3)[24]/45,XY,-8[2]
Subtelomer 8pter and 8qter present
GTG
FISH
DD, microcephaly, growth retardation, DYS
{1, case RC8-7 and RC8-8;
176}

RC/W-
08-
p23.3q24.3/
2-1

male/
20y

PBL
dn
46,XY,r(8)(p23.3q24.3)
dynamic mosaicism: 90% 46,XY,r(8)/46,XY
Subtelomer 8pter and 8qter absent
GTG
FISH
DD, microcephaly, growth retardation, DYS
{1, case RC8-9;
177}

RC/W-
08-
p23.2q24.3/
1-1

male/
16y

PBL
dn
46,XY,r(8)(p23.2q24.3)
dynamic mosaicism:
46,XY,r(8)[42]/45,XY,-8[8]
Subtelomer 8pter absent and 8qter present
aCGH: 4.76Mb loss in 4pter
GTG
FISH
aCGH
mild DD, microcephaly, growth retardation, DYS {1370, case 3 - provided by Dr. I. Lurie, Maryland, USA}
RC/W-
08-
p23.1q24.3/
1-1

male/
2.5y

PBL
?dn
46,XY,r(8)(:p23.1->p11.2::p23.1->p11.2 or p11.2->p23.1::p11.2->q24.3)
dynamic mosaicism: 10%; 46,XY,r(8)(p23q24.3)[27]/45,XY,-8[3]
acc. to aCGH loss in 8p at 8.1Mb and duplication in 8p23.1 to 8p11.2 from 12.5 to 39.6Mb
GTG
aCGH
DD, microcephaly, growth retardation, DYS
{1, case RC8-10;
178; 179; 553}

RC/W-
08-
p23.1q11.1/
1-1

female/
newborn

PBL
?dn
46,XX,r(8)(:p23.1->q11.1::q11.1->p23.1),
der(8)t(8;9)(p23.1;q22.32)

dynamic mosaicism: 46,XX,der(8),r(8)[70]/
45,XX,der(8),-r(8)[10]/46,XX,+r(8)[1]/46,XX,der(8)t(8;?)[20]
acc. to aCGH loss in 8p at 6.8Mb and duplication in 8p23.1 to 8p11.1 from 6.8 to 37.8Mb
GTG
FISH

aCGH
DD, growth retardation, DYS, hypotonia
{1372 - provided by Dr. I. Lurie, Maryland, USA}