ChromosOmics - Database

Icon by Leon Liehr                   

                                                  CHROMOSOME #4 -                                                 
UNCLEAR
 
Cases without clinical findings
Similar imbalances – no sSMC
Cases with clinical findings
Similar imbalances – no sSMC
Cases without clear clinical correlation
Cases with discontinous sSMC
Cases with complex sSMC
Cases with UPD and sSMC
Cases with neocentromeres
Similar imbalances
Tumor
DISCLAIMER
In general 70% of sSMC carriers are clinically normal. The figures listed above

are based on the bias, that mainly clinically aberrant cases are studied and reported in literature!



UPD (uniparental disomy) cases: UPD(4)mat UPD(4)pat UPD(4)mat or pat

Cases with unclear clinical correlation (U)

case no.
gender/
age at diagnosis

studied
material

de novo/
inherited

GTG-banding result
grade of mosaicism

final result of the sSMC
test
methods

clinical symptoms
Reference
04-
U-
1
see 04-Uu-1
see +21-U-1

04-
U-
2
male/
2y
PBL
cell line at ECACC DD1329
de novo 47,fra(X)(q27.3)Y,+mar[8]/
46,fra(X)(q27.3)Y[42]
mar(4).ish(cep+;wcp-) all centromeric probes; wcp 4 no physical abnormalities at 2y but language and other development moderately delayed; fragile X syndrome {12} case 3
04-
U-
3
male/
prenatal
AF de novo 47,XY,+mar[10]/
46,XY[9]
inv dup(4)(:p11.1q12:) cenM
subcenM; UPD-test
Amniocentesis due to AMA; no ultrasound abnormalities; pregnancy terminated {1} case 9
04-
U-
4
female/
prenatal
Amnion
cell line at ECACC DD0068
de novo 47,XX,+mar[27%]/
46,XX[73%]
min(4) all centromeric probes; wcp 4; UPD-test Amniocentesis due to AMA; pregnancy terminated; mar present in fetal tissue, no clinical details available on fetus {3} case 3
{15} case 2
04-
U-
5
see mult 2-18 {24} case MK
{25} case 15
04-
U-
6
female/
prenatal
AF de novo 47,XX,+mar[20]/
46,XX[13]
r(4)(::p11q11:) centromeric probes Amniocentesis due unclear MR of brother of father of the child. Normal ultrasound; TOP and in autopsy no anomalies. {21} case 35
04-
U-
7
male/
newborn
PBL de novo 47,XY,+mar[100%] r(4)(::p11q12::)[8]/
r(4;4)(::p11
q12::p11q12::)[2]
cenM; subcenM cerebellar atrophy, agranulocytosis, lymphocytosis; Hematuria, DD; cobalamnin-C-defect (homozygote c271dupA mutation in MMACHC gene in 1q34.1) {0} provided by Dr. A. Dufke, Tübingen, Germany
04-
U-
8
female/
prenatal

AF
n.a. 47,XX,+mar[100%] min(4)(:p11q11:) cep probes, BACs {see 35} MLPA AMA {35} case 2
04-
U-
9
see 04-Uc-1
04-
U-
10
see 04-Uc-2
04-
U-
11
see 04-Uu-2
04-
U-
12
male/
prenatal
AF n.a. 47,XY,inv(16)(q12q24),+mar[100%] min(4)(:p11→q12:) cenM/
subcenM
n.a. {0} provided by Dr. Stumm, Berlin, Germany
04-
U-
13
male/
prenatal
AF de novo 47,XY,+mar[20%]/
46,XY[80%]
min(4)(:p12→q12:) cenM/
subcenM
AMA, TOP, autopsy normal {0} provded by Dr. Joksik, Belgrade, Serbia
04-
U-
14
male/
prenatal
AF de novo 47,XY,+mar[30]/
46,XY[9]
mar(4)(:p12→q13.1:)
array (hg19):
46214008-60186304
aCGH TOP {48} case 4
04-
U-
15
male/
prenatal
AF de novo 47,XY,+mar[100] mar(4)(:p11→q12:)
array (hg19): break in

59.167217Mb
aCGH TOP {49}
04-
U-
16
male/
prenatal
AF n.a. 47,XY,+mar[7]/ 46,XY[23] min(4)(:p13→q12:)
arr[GRCh38] 4p13q12(44,296,785_
56,873,429)x2~3
aCGH, cenM, subcenM
hyperechogenic focus on the left ventricl {0} provided from Portugal
04-
U-
17
male/
6y
PBL n.a.
47,XY,+mar[6]/ 46,XY[30]
min(4)(:p11→q12:)
aCGH no imbalance
aCGH, cenM, subcenM DD, abnormal behaviour, not related with sSMC
{0} provided from Stuttgart, Germany
04-
U-
18
male/
prenatal
PBL de novo
47,XY,+mar[75]/ 46,XY[25]
mar(4)(:p11→q13.1:)
arr[hg19] 4p11q13.1 (48,978,053_63,145,931)×3
aCGH
NIPT showed the sSMC; most likely TOP, even though should be not leading to clinical problems
{51}

Cases with complex sSMC (Uc)

case no.
gender/
age at diagnosis

studied
material

de novo/
inherited

GTG-banding result
grade of mosaicism

final result of the sSMC
test
methods

clinical symptoms
Reference
04-
Uc-
1
female/
1y
PBL n.a. 47,XX,+mar[100%] min(4)t(4;7)(q12;p22.1)
array-data: break on #4 position 52.38 and #7 position 7.06
diff. FISH-probes; aCGH Plagiocephaly, optic nerve hypoplasia, hearing loss, hip dysplasia, and short stature. {38} case 1
{42}
04-
Uc-
2
female/
newborn
PBL mat
t(4;9)
47,XX,+mar[100%] min(4)t(4;9)(q12;p21.2)
array-data: break on #4 position 54.42 and #9 position 27.24
diff. FISH-probes; aCGH severe physical clincal signs; child died with 8 months {39; 42}

Cases with discontinous sSMC (Ud)

case no.
gender/
age at diagnosis

studied
material

de novo/
inherited

GTG-banding result
grade of mosaicism

final result of the sSMC
test
methods

clinical symptoms
Reference
04-
Ud-
1

female/
prenatal
AF pat (low mosaic; sib also with sSMC) 47,XX,+mar[100%] min(4)(:p11q12:
:q13.2→q13.2:)
aCGH (hg19)
52.68-55.51 and 67.24-69.19
aCGH; locus specific FIS father normal, sib normal, normal child born {46}
04-
Ud-
2

male/
n.a.
PBL de novo 47,fra(X)(q27.3)Y,+r[30]/
47,fra(X)(q27.3)Y[70]
r(4)(::p14→p13::p10→ q10::q31.1→q31.3::) all centromeric probes; wcp 4; midi; YAC probes as specified in {13} see below {13} case A
{14} case19
moderate MR; minor anomalies, like macrocephaly, plagiocephaly, brachycephaly, epicanthic folds, flat midface with relative prognathism, malocclusion, high arched palate, hypoplastic ala nasi, thin upper lips, short and broad neck, small hands and feet; fragile X-syndrome.
-
-
-
-
-
-
-
-
-

Cases with UPD (Uu)

case no.
gender/
age at diagnosis

studied
material

de novo/
inherited

GTG-banding result
grade of mosaicism

final result of the sSMC
test
methods

clinical symptoms
Reference
04-
Uu-
1
also listed as
+21-
04-
1
male/
1m
PBL de novo 48,XY,+21,+mar[28]/
47,XY,+21[7]
min(4)(:p12q11:)
partial maternal iso-UPD 4p16
cenM
subcenM; UPD-test
Down-syndrome {1} case 10
{2; 41}
04-
Uu-
2
n.a./
postnatal
PBL n.a. n.a. mar(4)(:p13q12:)
hg19:44.45–57.26Mb
also (partial) (i)UPD 4
aCGH most likely dymorphic and MR {44} 1 case