SMALL SUPERNUMERARY MARKER CHROMOSOMES- sSMC 3 -
|
| Cases without clinical findings |
16 |
Cases with clinical findings |
10 |
symptoms |
| Cases with unclear clinical correlation |
Cases with neocentromeres |
11 |
tumor 4 |
|
In general 70% of sSMC carriers are clinically normal. The figures here
are based on the bias, that mainly clinically aberrant cases are reported in literature!
UPD (uniparental disomy) cases: UPD 3 maternal paternal unclear
the probably non-dosage sensitive pericentric region of chromosome 3
SCHEMATIC CYTOGENETIC DEPICTION
DISCLAIMER
SCHEMATIC MOLECULARGENETIC DEPICTION
acc. to UCSC Genome Browser on Human Mar. 2006 assembly [UCSC hg18, 2006]
and available BAC-data/ array-data from cases marked *** mentioned below [MB]
critical region ? --- 74.67 uncritical region [89.40 centromere 93.20] uncritical region 104.78 --- ? critical region
Below adapted for UCSC hg19, 2009
critical region ? --- 73.17 uncritical region [87.90 centromere 93.90] uncritical region 105.48 --- ? critical region
Clinical symptoms of centromere-near proximal imbalances
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chromosomal region |
3p - proximal |
3q - proximal |
|
symptoms |
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| no cases yet | - | - |
| number of cases (marked with “°” below) | 0 | 0 |
Cases without clinical findings (O)
| 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 | ||
| 03-O- p12.2/ 1-1 |
male/ 45y |
PBL | n.a. | 47,XY,+mar[15] | min(3)(:p12.2→q11.1:) FISH-data: RP11-91A15 (89.6 MB) on sSMC |
cenM subcenM |
ICSI-patient; no clinical signs at age of 45 | {1} case 8 {2} case 2 {37} case 6 |
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03-O- p12.1/ 1-1 |
male/ 51y |
PBL | n.a. | 47,XY,+mar[6]/ 46,XY[14] |
min(3)(:p12.1→ q11.1~11.2:)[55]/ min(3)(:p11.1→ q11.1~11.2: :q11.1~11.2→ p11.1:)[2] FISH-data: RP11-91A15 (89.6 MB) RP11-21I16 (96.01 MB - hg2006; 94.53 MB - hg2009) on sSMC |
midi | Normal male with fertility problems and depression; cryptorchidism, small testes, umb. and ing. hernia. | {37} case 7 | ||
| 03-O- p12.1/ 2-1 |
female/ prenatal |
AF | n.a. | 47,XX,+mar[16]/ 46,XX[33] |
dic(3)(:p12.1→q11.2: :q11.2→p12.1:)[12]/ min(3)(:p12.1→q11.2:)[3]/ r(3)(::p12.1→q11.2::)[1] FISH-data: RP11-91A15 (89.6 MB) and RP11-21I16 (96.01 MB - hg2006; 94.53 MB - hg2009) on sSMC |
cenM subcenM |
see below | {0} provided by Dr. P. Miny, Basel,Switzerland
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| Amniocentesis CVS in week 14+4 due to advanced risk in 1. trimenon screening (1:280), normal child born with APGAR 9/9/10; weight 3650g, length 50cm | ||||||||||
| 03-O- p12.1/ 2-2 |
female/ 29y |
PBL (EKF- cellbank) |
n.a. | 47,XX,+mar[17%]/ 46,XX[83%] |
r(3)(::p12.1→q11.1::)[14]/ min(3)(:p12.1→q11.1:)[5]/ min(3)(:p12.1→q11.1: :q11.1→p12.1:)[2] FISH-data: RP11-91A15 (89.6 MB) on sSMC |
midi subcenM |
Normal female | {0} provided by Dr. G. Krüger, Rostock. Germany
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| 03-O- p12/ 1-1 |
male/ prenatal |
AF | de novo | 47,XY,+mar[100%] | min(3)(:p12→q10:) | midi | see below | {8} case 1 | ||
| Amniocentesis due to advanced maternal age. A healthy boy was delivered at term. At 20m of age the development of the child was still normal. | ||||||||||
| *** 03-O- p11.2/ 1-1 *** |
female/ 37y |
PBL | de novo | 47,XX,+mar[100%] | min(3)(:p11.2→q11.1:) no prove of euchromatin by array-CGH FISH-data: RP11-312H1 (87.6 MB) on sSMC |
array-CGH (Agilent 44000); FISH with BAC RP11-312H1 (87.6 MB) in 3p11.2 | Normal female with one 15 years old daughter. One miscarriage at 5 months of gestation | {0} provided by Dr. F. Sheth, Ahmedabad, India | ||
| *** 03-O- p11.2/ 2-1 *** |
female/ 35y |
PBL | n.a. | 47,XX,+mar[5]/ 46,XX[10] |
r(3)(:p11.2→q12.1:) aCGH: 74.67-104.78 |
cep probes, subcenM; MCB; array-CGH | Physically normal female; in childhood repeated infections, developmentally retarded and language development problems | {0} provided by Dr. Gillessen Kaesbach, Lübeck, Germany | ||
| 03-O- p11.1/ 1-1 |
male/ newborn |
PBL | de novo | 47,XY,+mar[100%] | min(3)(:p11.1→q11.1:) | cenM, subcenM | studied postnatal cytogenetically due to free trisomy 3 in chorion | {0} provided by Dr. OA Haas, Vienna, Austria | ||
| 03-O- p11.1/ 1-2 |
male/ prenatal |
AF | de novo | 47,XY,+mar[25]/ 46,XY[19] |
min(3)(:p11.1→q11.1:) | cenM, subcenM | Amniocentesis due to M. Hodgkin and chemotherapy 10 years ago; normal child born and normal at 2 years of age | {0} provided by Dr. Mehnert, Neu-Ulm, Germany | ||
| 03-O- p11.1/ 2-1 |
female/ adult |
PBL | de novo | 47,XX,+mar[100%] | min(3)(:p11.1→q11.2:) | pAEO.68; RP11-631O4 | Studied due to one second trimester miscarriage | {46} case P-1 | ||
| 03-O- p11.1/ 3-1 |
male/ 33y |
PBL | n.a. | 47,XY,+mar[15%]/ 46,XY[85%] |
min(3)(:p11.1→q12:) | cenM, subcenM | Studied due to fertilty problems | {0} provided by Dr. Iuorov, Moscow, Russia | ||
| *** 03-O- p10/ 1-1 *** |
male/ prenatal |
AF | maternal [33%] |
47,XY,+mar[41%]/ 46,XY[59%] |
r(3)(::p10→q13.1::) FISH-data: RP11-21I16 (96.01 MB - hg2006; 94.53 MB - hg2009) on sSMC |
midi | Advanced maternal age. Mother normal; at nine months of age the development of the child was still normal. |
{5} cases E; F | ||
| *** 03-O- p10/ 2-1 *** |
n.a./ prenatal |
CH | maternal [5-6%] |
47,+mar[56%]/ 46[44%] |
r(3)(::p10→q12::) FISH-data: RP11-21I16 (96.01 MB - hg2006; 94.53 MB - hg2009) on sSMC |
midi; UPD-test |
Normal at autopsy; mother normal | {5} cases B; C | ||
O-cases with unclear/insufficient characterization of the sSMC itself (CO)
| 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 | ||
| 03- CO-1 |
male/ prenatal |
AF | de novo | 47,XX,+mar[80%]/ 46,XX[20%] |
min(3) | FISH probe (D3Z1) | see below | {3} case 6 | ||
| Amniocentesis due to advanced maternal age and 3 previous abortions; pregnancy terminated; pathology of the fetus was normal at 18 weeks of gestation. | ||||||||||
| 03- CO-2 |
female/ 7m |
PBL | de novo | 47,XX,+mar[56%]/ 46,XX[44%] |
min(3) .ish D3Z1+, wcp3+ | different FISH probes | normal apart from a dysplastic kidney | {3} case 5 | ||
| 03- CO-3 |
female/ 30y |
PBL | de novo? | 47,XX,+mar[20]/ 46,XX[80] |
r(3) | SKY; wcp3 | repeated abortions | {19}case 5 {37} case 8 |
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| 03- CO-4 |
n.a./ prenatal |
AF | de novo | 47,+mar[?%] | r(3) | n.a. | normal sonography | {44} 1 case | ||
Cases with clinical findings (W)
| 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 | ||
| 03-W- p12.3/ 1-1 |
male/ 5y |
PBL | de novo | 47,XY,+r[11]/ 46,XY[9] |
r(3)(::p12.3→q11.2::) aCGH: 81.47-99.78 MB |
different FISH-probes; aCGH | see below | {49} case 5 | ||
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global developmental delay, sagittal craniosynostosis, intermittent right eye extropia, small nares, small cupped-shaped ears, patent ductus arteriosus, scoliosis, small phallus and clinodactyly |
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| 03-W- p12.1/ 1-1 |
female/ prenatal |
AF | de novo | 47,XX,+mar[100%] | min(3)(:p12.1→q11.2:) FISH-data: RP11-21I16 (96.01 MB) on sSMC |
cenM; MCB, subcenM | see below | {20} | ||
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Amniocentesis due to abnormal results in ultrasound scan in week 20; growth retardation of three weeks, oligohydramnion and dolichocephalos. In week 21 the fetus was spontaneously aborted. An autopsy was not performed. |
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| 03-W- p12.1/ 2-1 |
female/ 8y |
PBL cell line at ECACC DD0767 |
de novo | 47,XX,+r[4]/ 46,XX[46] |
r(3)(::p12→q13.2::)[12%]/ r(3)(::p12→q13.2::p12→q13.2::)[12%] FISH-data: RP11-21I16 (96.01 MB) on sSMC |
all centromeric probes; wcp 3; cenM; subcenM; MCB; UPD-test |
see below | {4} case 2 {12} case 2 {27} case 1 |
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Mild developmental delay, short stature; suspicion of Turner syndrome; slow language |
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| 03-W- p11/ 1-1 |
see McCl-03-W-p11/1-1 | {16; 32}{33}case 1 | ||||||||
| 03-W- p10/ 1-1 |
female/ 1y |
PBL | de novo | 47,XX,+r[70%]/ 46,XX[30%] |
r(3)(::p10→q11::) | midi | see below | {9} case 1 | ||
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child born with slight dysplastic features; muscular hypotonia and feeding difficulties in neonatal period; normal psychomotor development |
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W-cases with unclear/insufficient characterization of the sSMC itself (CW)
| 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 | ||
| 03-CW-1 | female/ 2.5m |
PBL | maternal (in 3% of PBL) |
48,XX,+2mar[50]/ 47,XX,+r[36]/ 46,XX[14] |
mar(3) .ish (wcp+, D3Z1+) | wcp3; cep3 | see below | {10} | ||
| Uncomplicated pregnancy and delivery, APGAR 3/7; feeding difficulties, lethargy and arrest in linear growth at 10w of age. Dysmorphic signs with small nose, a tented upper lip and relative macrocrania; frontal bossing, anteverted nares; hypotonic with poor visual tracking; cerebellar astrocytoma was detected and removed, followed by 1y chemotherapy; delay in speech development; growth development continues along less than the 5th percentile. | ||||||||||
| 03-CW-2 | n.a./ prenatal |
AF | de novo | 47,+mar[?%] | r(3) | n.a. | abnormal sonography; TOP | {44} 1 case | ||
| 03-CW-3 | female/ 7y |
PBL | de novo | 47,XX,+mar[17]/ 46,XX[3] |
mar(3)(p?→q?) | wcp 3 | see below | {47} | ||
| high triangular forehead, hypertrichosis, wide spaced eyes, ptosis, down-slanting palpebral fissures, strabismus, broad nasal root, very short nose with anteverted nares, short grooved philtrum, triangular mouth, high narrow palate, micrognathia, malformed ears with preauricular sinus on one of sides and skin lesions, corpus callosum agenesis and hydrocephaly, abnormal feet position. | ||||||||||
| 03-CW-4 | male/ 2y |
PBL | n.a. | 47,XY,+mar[?%]/ 46,XY[?%] |
min(3) | SKY | DD | {50} case F0613262 | ||
| 03-CW-5 | male/ 2y |
PBL | n.a. | 47,XY,+mar[100%] | min(3) | SKY | delayed milestones | {50} case F0732043 | ||
W-Cases with similar imbalances NOT caused by sSMC (W-IMB)
| case no. | gender/ age at diagnosis | studied material |
de novo/ inherited |
GTG-banding result and FISH result incl. grade of mosaicism | test methods |
clinical symptoms | reference | ||
| 03-W-IMB-q11.1/ 1-1 |
male/ 20m |
PBL | maternal (intrachromosomal insertion in 3p26.2) |
46,XY,ins(3;3)(p26.2;p11.1p14.2) |
n.a. | developmental delay and multiple minor congenital anomalies | {41} | ||
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 | ||
| 03- U-1 |
see mult 2-1 | {6} case 2 | ||||||||
| 03- U-2 |
see mult 2-2 | {7} | ||||||||
| 03- U-3 |
see 03-CO-3 | |||||||||
| 03- U-4 |
female/ prenatal |
AF | de novo | 47,XX,+mar[100%] | r(3) | SKY | amniocentesis due to advanced maternal age; normal ultrasound in weeks 18 and 24 of gestation | {19}case 4 | ||
| 03- U-5 |
n.a./ prenatal |
AF | de novo | 47,+mar[63%]/ 46[37%] |
r(3)(::p10→q12::) | midi | see below | {5} case D | ||
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Amniocentesis due to advanced maternal age. The parents' chromosomes were normal, and they elected to terminate the pregnancy in week 18. No fetal abnormalities were found at autopsy. |
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| 03- U-6 |
see mult2-14 | {11} case 28 | ||||||||
| 03- U-7 |
n.a./ n.a. |
n.a. | n.a. | 47,+mar[?%] | mar(3) | wcp probes | no info available | {38} 1 case | ||
| 03- U-8 |
female/ prenatal |
CH, AF | de novo | 47,XX,+mar[100%] | min(3)(:p12.2→q10:)* +3 in short term culture; mat UPD 3 |
BAC probes, MLPA; UPD-test | see below | {42} {45 case 1} |
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twin pregnancy; in chorion (short term culture) in twin 2 a trisomy 3 (100%) was detected; in long term culture in 100% of cells had sSMC; twin 2 significantly shorter than twin, IUGR 1; sSMC also found in amnion cells; selective fetocide was done, however, after 3 weeks death delivery of both twins. |
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Cases with neocentromeres (N)
| 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 | ||
| 03-N-1 | n.a./ prenatal |
AF | de novo | 47,+mar[17%]/ 46[83%] |
neo(3) | cep 3, wcp 3 | see below | {45} case 15 | ||
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sonographic abnormalities: clubfeet, clenched hands, right hydronephrosis, ventricular dilatation, TOP; fetopathology: facial dysmorphism: dolichocephaly, microretrognathism, upslanted palpebral fissures, low-set ears, synophris Ventricular dilatation, clubfeet, clenched hands, narrow chest, nephromegaly, didelphic uterus |
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| 03-N- qt25.33/ 1-1 |
female/ 1m |
PBL; fibroblasts | de novo | PBL: 46,XX fibro: 47,XX,+inv dup(3)(qter→q25.33::q25.33→qter)[100%] |
subtel 3qter; array-CGH | see below | {39} | |||
|
dysmorphic features; pregnancy and delivery at term were normal. Birth weight was 2200g, length 45cm and head circumference 32cm. At birth: prominent hairy forehead with hair extending up to the cheeks, upslanting palpebral fissures, depressed nasal bridge with short nose and very smooth philtrum, thin upper lip which was turning downward, low set ears, micrognathia , chubby cheeks, contracture of the fingers with postaxial polydactyly of left hand, widely separated toes which were overlapping, streaky pigmentation on the inner aspect of both fore arms distributed along the lines of Blaschko. Ophthalmological exam was normal. Echocardiography showed sub-aortic ventricular septal defect (VSD), pulmonary hypertension and moderate valvular pulmonary stenosis. Skeletal survey showed a tiny projection of the tip of coccyx, a tail-like sacrococcygeal appendage. Computed tomography scan of the lumbosacral spine showed prominence of coccyx and outward projection. Magnetic resonance imaging of the brain showed partial hypoplasia of the corpus callosum and slight hypoplasia of the cerebellum. |
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| 03-N- qt26/ 1-1 |
male/ 50y |
abdominal wall metastasis of a lung sarcanoid carcinoma | de novo; acquired | GTG and FISH result combined: 67~71<3n>,XX,der(Y)t(Y;14)(p11;q11),del(1)(q23),1der(?1)t(3;15;1;14) (3?q;15q?;1?q;14q?),der(2)t(2;20)(p23;?),der(2)t(2;17)(q13;q11?),del(3) (q21),del(3)(q21),+i(3)(qter→q26::q26→qter)x2,del(6)(?q21),+der(6)t(6;17) (?;?),del(7)(q21),+der(8)t(8;21)(?;q21),der(9)t(9;3;13)(q12;?;q11),der(9) t(6;9)(q15?;q21),+i(9)(pter→p23::p23→pter)x4~6,10,der(11)i?(11)(q10?), -13,der(14)t(14;15)(?;?),der(14)t(14;3;?)(?;?;?),15,der(13;15)(q10;q10), -16,der(17)t(9;17)(p11;q11),-18,19,der(19)t(2;19)(?;q?11),del(21)(q21), -22,der(22)t(17;22)(?;q11)[cp20]. |
M-FISH, various probes as listed in {29}
array-CGH |
see below | {25} | |||
|
A 50-year-old man presented with a history of cough, hemoptysis, and thoracic pain (regular smoker); cavitating tumor of the right upper lobe diagnosed ( T2 N0 M0). right upper lobectomy showed an excavated tumor 6x5x3 cm. The tumor cells positive for cytokeratin 7, not for cytokeratin 20. Sarcomatoid carcinoma of the lung of the pleomorphic carcinoma subtype was diagnosed. One month after surgery, the patient developed a subcutaneous metastasis on the right thigh (M1). Chemotherapy with cisplatin (100 mg/m2 on day 1) and vinorelbine (25 mg/m2 on days 1, 8, 15, and 22 of a 28-day cycle), but after three cycles the patient progressed with the development of multiple subcutaneous metastases. One of the abdominal wall metastases (M2) was resected for palliative intent 8 months after the initial diagnosis. After two additional lines of chemotherapy, the patient died of progressive disease 13 months after the initial diagnosis. |
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| 03-N- qt26/ 2-1 |
male/ 10y |
bone marrow, lymph node cells; pleural fluid cells | de novo acquired |
marker present one time each in 15/15 lymph node cells in 5/14 and two times each in 5/14 pleural fluid cells in unstimulated bone marrow trisomy 3 in 10/15 cells and 2 /15 cells with marker |
inv dup(3)(qter→q2?6: :q2?6→qter) | wcp and FISH with different probes | B-cell lymphoma | {26; 32} | ||
| 03-N- qt26/ 2-2 |
male/ 3.5y |
bone marrow, lymph node cells; pleural fluid cells | de novo acquired |
marker present one time each in 15/15 lymph node cells in 10/14 in pleural fluid cells; duplicated marker in 5/10 of these cells in unstimulated bone 47,XY,+3[10]/47,XY,+mar[2]/46,XY[3] |
inv dup(3)(qter→q26: :q26→qter) | wcp and FISH with different probes | T-cell lymphoma - case maybe the same as 03-N-q26/2-1. | {28} | ||
| 03-N- qt26.2/ 1-1 |
male/ prenatal |
skin fibroblasts cell line at ECACC DD3329 |
de novo | 47,XY,+mar[17]/ 46,XY[13] |
inv dup(3)(qter→q26.2: :q26.2→qter) (sSMC derivatve of mat. chr. 3) |
all cep probe, M-FISH, sub-telomeric probes 3p and 3q; UPD-test | see below | {14; 18; 22; 32} | ||
|
Pregnancy terminated due to abnormal ultrasound scan, necropsy demonstrated presence of high arched palate with small amount of postnuchal edema, single transverse palmar crease on right hand, on the back a 1.3cm long lumbosacral myelomengiocele, Arnold-Chiari-malformation, asymmetry of the kidneys, renal dysplasia |
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| 03-N- qt26.2/ 1-2 |
male/ 1d |
PBL/ fibroblasts | de novo | 47,XY,+mar[1]/ 46,XY[39] mar in 35/40 fibroblasts |
inv dup(3)(qter→q26.2: :q26.2→qter) | pan-centromeric probe; telomeric probe; wcp3 subtel 3q | see below | {17} case 2; {18; 22; 32} | ||
|
Born by vaginal delivery at 36 weeks of gestation; birth weight 2,905 g (25th centile); Prenatal ultrasound had shown a megaureter and an enlarged kidney on the right side. At 4 weeks, his growth parameters were all at the 25th centile. The skin showed streaky hyperpigmentation with whorl-like and streaky patterns that were most pronounced over the trunk and extremities; wide open anterior and open posterior fontanel, ocular hypertelorism, upslanting eyes, depressed nasal bridge, and a preauricular pit on the right side. Accessory nipples were present bilaterally. Testicles were undescended. His hands showed bilateral miniature postaxial polydactyly, clinodactyly of the 5th fingers with only one flexion crease, mild flexion contractures of the metacarpophalangeal joints of other fingers, and bilateral transverse palmar creases. Rocker bottom feet and eversion of the right foot were present. At age 6 weeks, he developed tonicclonic seizures; left cerebral ventricle that was slightly bigger than the right by computed tomography scan; right pulmonary artery stenosis; duplication of the right kidney with hydronephrosis and a normal left kidney; slight nystagmus; psychomotor delayed; mild delay in all areas of development. |
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| 03-N- qt26.2/ 1-3 |
male/ 10y |
PBL/ fibroblasts | de novo | 46,XY in PBL 47,XY,+mar[mos] in fibroblasts |
inv dup(3)(qter→q26.2: :q26.2→qter) | midi, sub-telomere 3q | see below | {21; 32} | ||
|
Suspicion of bilateral Perthes disease; mild developmental delays, attention deficit-hyperactivity, macrocephaly, asymmetries of the hands and of the legs, linear and swirly arrays of irregular skin pigmentation and areas of focal skin atrophy, both distributed in a manner consistent with lines of Blaschko. |
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| 03-N- qt26.2/ 1-4 |
female/ 8y |
PBL/ fibroblasts | de novo | 46,XX in PBL 47,XX,+mar[14]/46,XX[45] in fibroblasts |
inv dup(3)(qter→q26.2: :q26.2→qter) | n.a. | skeletal abnormalities, limb stiffness, abnormal skin pigmentation, developmental delay | {23; 32} | ||
| 03-N- qt26.3/ 1-1 |
male/ adult? |
bone marrow | de novo acquired |
46,XY in PBL/ constitutional 50,XY,der(1)(qter→ q21::p36→qter),+8,+10,+13,+mar |
inv dup(3)(qter→q26.3: :q26.3→qter) | CGH, subtelomere-FISH |
Fanconi anemia | {24} | ||
| 03-N- qt26.3/ 2-1 |
female/ 5y |
PBL | de novo | 47,XX,+mar[27]/ 46,XX[3] |
inv dup(3)(qter→q29: :q26.3→qter) | SKY, array CGH, BAC-FISH |
see below | {30, 31, 37} | ||
|
Born after uneventful pregnancy; at birth normal growth values (50th centile). However, at birth diastasis recta, atrial septal defect, dysmorphic facies synophris, hirsutism, flat face, low nasal bridge, thin underlip, long philtrum) plus short 5th finger on both hands. Developmental delay. At 3.5y developmental quotient of 38-39. At 5y moderate to severe delay in psychomotor development. weight 16.6kg (10-25 centile), height 99cm (<3rd centile), OFC 50.2 cm (50-75th centile). |
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| 03-N- qt26.32/ 1-1 |
female/ 4y |
skin fibroblasts | de novo | 47,XX,+mar[38]/ 46,XX[12] |
mar/ ?r(3)(:q26.32→q28:) | array-CGH | see below | {48} | ||
|
developmental delay, speech abnormalities, congenital; cardiac defects, umbilical hernia, high arched palate, cubitus valgus, short; metacarpals and metatarsus, intermamilar increased distance, hirsutism, hypertrichosis, low set ears, hypopigmented streaks and whorls along the Blaschko's lines on face, trunk, legs, and arms |
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| 03-N- qt27.1/ 1-1 |
male/ 22y |
PBL/ skin fibroblasts |
n.a. | 47,XY,+mar[30%]/ 46,XY[70%] (sSMC present in 6% of fibroblasts of hyper pigmented skin; absent in normal pigmented skin) |
inv dup(3)(qter→q27.1: :q27.1→qter) | all wcp probes; an all centromeric probe, cep3, 30 YACS along chromosome 3 | progredient pigmentary coetaneous anomalies following the Blaschko lines since 10-12y of age | {13; 18; 22; 32} | ||
| 03-N- qt27.2/ 1-1 |
female/ 1.5y |
PBL | de novo | 47,XY,+mar[42]/ 46,XY[17] |
inv dup(3)(qter→q27.2: :q27.2→qter) | pan-centromeric probe; telomeric probe; wcp3 subtel 3q; SKY | see below | {17} case 1; {18; 22; 32} | ||
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Birth by cesarean section due to breech presentation in week 39; birth weight at 75. centile; dislocated right hip; shallow acetabula fossa on the left At age 3 to 4 days, swirly areas of hyperpigmentation on her back, abdomen, thighs, and forearms were noted. At age 8 months, head circumference was at 75th centile, height and weight at 90th centile, face flat with depressed nasal bridge; bilateral preauricular pits; hypotonia; developmental delay. At 14 months seizures; scoliosis, far-sightedness and strabismus. At 7 years globally developmental delayed but socially interactive. |
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| 03-N- qt28/ 1-1 |
female/ 5y |
PBL | de novo? | 47,XX,+mar[100%?] | inv dup(3)(qter→q28: :q28→qter) | an all centromeric probe, midi, Sub-telomeric probes 3q and 14 YAC/BAC probes from 3q26-29 | see below | {15; 18; 22; 32}
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At 5y marked developmental delay and mild facial dysmorphism. At birth length 49cm, weight 2965 g, OFC 34 cm. At age of 8.5y height 131 cm, weight 37 kg (>97th centile); hypognathia, broad flat nasal root, abnormally shaped alae nasi; median upper lids with atypical epicanthus; slight hirsutism ; bilateral ichthyosiform hyperkeratosis of the palms and soles; slight muscular hypotonia and hyporeflexia. Perceptive skills and visuomotor coordination retarded corresponding to a developmental age of 3-3.5 years. At age of 8.5 years she cannot speak properly, searching for words, can recognize only between 10 and 15 letters, and is still not able to write. |
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other 6 neocentromeric cases with involvment of chromosome 3 (no sSMC):
Maraschio P, Tupler R, Rossi E, Barbierato L, Uccellatore F, Rocchi M, Zuffardi O, Fraccaro M.
A novel mechanism for the origin of supernumerary marker chromosomes.
Hum Genet. 1996 Mar;97(3):382-6.
Gimelli G, Zuffardi O, Giglio S, Zeng C, He D.
CENP-G in neocentromeres and inactive centromeres.
Chromosoma. 2000;109(5):328-33.
Ventura M, Weigl S, Carbone L, Cardone MF, Misceo D, Teti M, D'Addabbo P, Wandall A, Bjorck E, de Jong PJ, She X, Eichler EE, Archidiacono N, Rocchi M.
Recurrent sites for new centromere seeding.
Genome Res. 2004 Sep;14(9):1696-1703. (case 2**)
Papenhausen P, Gadi I, Tepperberg J, Mowrey P, Singh-Kahlon P, Wisniewski L, Goodwin D
Trisomy 3q secondary to a terminal deletion/generation of a mirrorimage analphoid marker in a neonate.
Am J Hum Genet. 2003; 73: Suppl:313 (Abstractno 841).
Gimelli G, Giorda R, Beri S, Gimelli S, Zuffardi O.
A large analphoid invdup(3)(q22.3qter) marker chromosome characterized by array-CGH in a child with malformations, mental retardation, ambiguous genitalia and Blaschko's lines.
Eur J Med Genet. 2007 Jul-Aug;50(4):264-73. (case 3**)
Tsuchiya KD, Opheim KE, Hannibal MC, Hing AV, Glass JA, Raff ML, Norwood T, Torchia BA.
Unexpected structural complexity of supernumerary marker chromosomes characterized by microarray comparative genomic hybridization
Molecular Cytogenetics 2008, 1:7 (case 1)
** = identical case
N-Cases with similar imbalances NOT caused by sSMC (N-IMB)
| case no. | gender/ age at diagnosis | studied material |
de novo/ inherited |
GTG-banding result and FISH result incl. grade of mosaicism | test methods |
clinical symptoms | reference | ||
| 03-N- IMB- p25/ 1-1 |
male/ 4.5y |
PBL | de novo | 46,XY,dup(3)(p25pter) | n.a. | see below | {34; see also similar cases 40} | ||
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moderate growth and mental retardation, muscular hypotonia, hypoplasia of the left kidney, a short neck, and a square-shaped face characterized by a broad and flat nasal bridge, slight epicanthus, and full cheeks, dysmorphic signs are less impressive, and developmental delay is relatively moderate |
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| 03-N- IMB- q26.3/ 1-1 |
male/ 11y |
PBL | de novo | 46,XY,invdup(3)(q29→q26.3::q26.3→q29),del(12)(p13.33)[56]/ 46, XY[45] |
wcp 3, D3S456011, subtel 12p |
autism, mental retardation, developmental delay; born with a clubfoot, |
{35} | ||
| 03-N- IMB- q25.3/ 1-1 |
female/ newborn |
PBL | de novo | 46,XY,trp(3)(q25.3q29) | wcp, BACs | see below | {36} | ||
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The girl died at the age of 3.5 weeks due to her malformations. She demonstrated disproportionate short stature with short limbs, a prominent and hairy forehead, thick eyebrows, synophris, small upturned nose, full cheeks, micrognathia, and low set malformed and posteriorly rotated ears, short and webbed neck, hydrocephalus, Dandy-Walker malformation, spina bifida, complex heart defect (ventricular and atrial septal defect, malrotation, and interrupted aortic arch), omphalocoele, polycystic kidneys, postaxial polydactyly of left hand, and generalized hirsutism |
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| 03-N- IMB- q29/ 1-1 |
female/ 9y |
PBL | de novo | 46,XX. arr cgh dup(3)(q29) | array CGH; i-FISH with involved clones | see below | {29} | ||
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Born at 37 weeks of gestation. Pregnancy complicated by prolonged premature rupture of membranes at 29 weeks. Birth weight 1.78 kg, multiple gastro-intestinal abnormalities (tracheosephageal fistula, esophageal atresia, imperforate anus, Meckel diverticulum, malrotation). Abnormal segmented sacrum with hemi vertebra at S4. Patent foramen ovale. VATER association. At 2.5 years - after some surgical corrections - she done quite well and had no developmental delay. At 9 y - minor dysmorphism signs at hand, feet and face |
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