sSMC derived from unknown non-acrocentric chromosome

Here not all available older sSMC-cases identified in the pre-FISH era are included! 

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Cases without
clinical findings
Cases with
clinical findings
Cases with
unclear clinical correlation
 

Abbreviations and FISH-methods

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Cases without clinical findings (O):

case no. 

gender

age at diagnosis

studied 
material

de novo/ 
inherited

GTG-banding result
grade of mosaicism

final FISH result of the sSMC

FISH
methods

UPD
result

clinical symptoms

reference

u-
O-1
- - - - - - - - - -

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Cases with clinical findings (W):

case no. 

gender

age at diagnosis

studied 
material

de novo/ 
inherited

GTG-banding result
grade of mosaicism

final FISH result of the sSMC

FISH
methods

UPD
result

clinical symptoms

reference

u-
W-1
male 6m PBL de novo 47,XY,+mar[100%] mar stains only with a reverse painting probe of itself midi and flow sorting with rev FISH n.a. born at term and well at birth; delayed milestones; divergent squint; nystagmus at age of 18m; ears low-set and prominent;  {8; 10, 11}
u-
W-2
female prenatal AF n.a. 47,XX,+mar[100%] mar stains only with a reverse painting probe of itself midi with rev FISH n.a. no clinical info available {11}

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Cases with unclear/insufficient characterization of the sSMC itself (C):

case no. 

gender

age at diagnosis

studied 
material

de novo/ 
inherited

GTG-banding result
grade of mosaicism

final FISH result of the sSMC

FISH
methods

UPD
result

clinical symptoms

reference

u-
C-1 to u-
C-3
various

prenatal

AF familial or de novo 47,+mar n.a. n.a. n.a. none or n.a. {1}
u-
C-4
various

postnatal

PBL familial  47,+mar n.a. n.a. n.a. slight mental retardation {2}
u-
C-5
?

postnatal

PBL ? 47,+mar n.a. n.a. n.a. multiple anomalies {3}original literature presently not available
u-
C-6 to u-
C-10
various

postnatal

PBL de novo 47,+mar n.a. n.a. n.a. multiple anomalies {4} plus review of literature before 1978
u-
C-11 to u-
C-25
various

prenatal and postnatal

AF and PBL familial or de novo 47,+mar n.a. n.a. n.a. multiple anomalies or normal {5}  
u-
C-26
male 16y PBL de novo 48,XY,+r,+mar[43%]/
47,XY,+r[14%]/
47,XY,+mar[18%]/
46,XY[25%]
n.a. n.a. n.a. Hypogonadotrophic hypogonadism; several developmental milestones delayed, hypoplastic kidney, spina bifida oculta in L4, 5; mental retardation {6}
u-
C-27
male prenatal AF paternal
3/50 metaphases with mar
47,XY,+r?[7]/
46,XY[1]
n.a. wcpX, wcpY n.a. amniocenteses due to advanced  maternal age {7} case 5
u-
C-28
female 5y PBL/
Fibroblasts
de novo 47-51,XX,+mar1-5x/
[17.3%/33.6%/30%/18.2%/0.9%]
46,XX[2.7%]
n.a. n.a. n.a. multiple anomalies as described in {9} {9}

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