SMALL SUPERNUMERARY MARKER CHROMOSOMES- sSMC multiple -
|
ONLY CASES ARE INCLUDED HERE, WHERE THE ORIGIN OF THE sSMC WAS CHARACTERIZED - CASES DESCRIBED IN PRE-FISH ERA ARE NOT LISTED.
Cases with sSMC derived from 2 different chromosomes
| 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 | ||
| mult 2-1 |
female/ 1m |
PBL | de novo | 48,XX,+mar1,+mar2x1-x5[22%]/ 47,XX,+mar2x1-x5[78%] |
mar1 = r(3) mar2 = unknown (not tested werecep2, cep4, cep8, cep15) |
FISH with all available centromeric probes | delayed development, short stature and microcephaly at age of 7y. | {2} case 2 | ||
| *** mult 2-2 *** chr13 |
male/ 5y |
PBL | de novo | 47,XY,+mar[17]/ 46,XY[8] |
48,XY,+min(3)(:p12.1q11.2:), +min(13)(pter→q12.1:)*[9]/ 47,XY,+min(3)(:p12.1q12.1:)[16]/ 47,XY,+min(13)(pter→q12.1:)[17]/ 46,XY[43] |
CGH, centromeric probes M-FISH |
see below | {3} | ||
|
At age of 5y height 44.25 inchers (90th centile), weight 25.5 kg (50th centile), HC 54cm (35th centile). severe dysmorphic features like flat face, prominent nose, long philtrum, low-set, posteriorly rotated ears, sub mucous cleft, retrognathia, speech delay. |
||||||||||
| mult 2-3 |
male/ 4y |
PBL | de novo | 48,XY,+mar1,+mar2[39%] 47,XY,+mar1[23%]/ 47,XY,+mar2[20%] 46,XY[17%] |
mar1 = r(6), mar2 = r(9) |
D6Z1; cep9 (pMR9A); wcp 6; wcp 9; telomeric probes | see below | {4} | ||
|
uneventful pregancy and delivery, walking at age of 30 months, speech at 3 years; global developmental retardation; some autistic features, broad philtrum, clinodactyly |
||||||||||
| mult 2-4 |
male/ 4m |
PBL | de novo | 48,XY,+mar1,+mar2[56%]/ 47,XY,+mar1[44%] |
mar1 = r(6) mar2 =r(X) |
FISH with all available centromeric probes | see below | {5} case 3 | ||
|
delayed development, seizure disorder, microcephaly, dysmorphic features |
||||||||||
| mult 2-5 |
female/ n.a. |
PBL | n.a. | 48,XX,+mar1,+mar2[9]/ 47,XX,+mar1[11] |
mar1 = mar(6) mar2 = not identified; satellited? |
SKY | dysmorphic features, early onset scoliosis, developmental delay, microcephaly | {6} case 7 | ||
| mult 2-6 |
female/ prenatal |
AF | de novo | 48,XX,+2mar[12]/ 47,XX,+mar[3] |
min(9)(:p11→q11:), min(20)(p11.2→q11.1)[16]/ min(9)(:p11→q11:)[4] | cenM; subcenM |
see below | {7} case 34 {19} |
||
|
Amniocentesis due to abnormal triple test results; hygroma colli detected in ultrasound; pregnancy terminated. |
||||||||||
| mult 2-7 |
male/ prenatal |
AF | de novo | 47,XY,+mar[11]/ 46,XY[11] |
i(10)(:p11.1→q11.1: :p.or.q11.1→q11.1 or p11.1)[15]/ i(10)(pter→q11.21: :q11.21→pter)x2 (tetraploid mitosis)[2]/ min(18)(p11.1→q11.1)[3] |
cenM; subcenM |
see below | {7} case 35 | ||
|
singular umbilical cord artery, complex heart defect and microcephalus detected in ultrasound; fetus spontaneously aborted |
||||||||||
| mult 2-8 |
female/ 13y |
PBL | de novo | 49,XX,+r,+r,+r[4]/ 48,XX,+r,+r[19]/ 47,XX,+r[34]/ 46,XX[18] |
?; r(X),r(17) r(X) / r(17) |
different FISH-probes: centromeric probe for X and 17 |
see below | {8} | ||
|
Family history of NF1; at age of 6 years. At age 12 1/2: height 121 cm (- 6 s.d.), weight 24.5 kg (- 4 s.d.), head circumference 50 cm ( - 2 s.d.). Inner canthal distance 2.6 cm (10th centile) outer canthal distance 7.1 cm (3rd centile); blood pressure 100/68 mm Hg, no heart murmur; single transverse palmar crease on the left and normal crease on the right; short 5th fingers; genitalia + breasts at Tanner stage I, extensive freckling on the body and on the back of her hands + bilateral axillary freckling; >5 cafè-au-lait spots; mild speech impediment |
||||||||||
| mult 2-9 |
female/ 4y |
PBL | de novo | 48,XX,+mar1,+mar2[32%]/ 47,XX,+mar1[54%]/ 46,XX[14%] |
mar1 = r(18) mar2 = r(13) |
SKY | see below | {10} | ||
|
marked delay in speech, slight motor delay; dysmorphic signs like medial flare eyebrows, synorphs, long eyelashes, full cheek, hyperconvex finger nails, clinodactyly of Vth finger, large space between 1. and 2. toe, deep plantar creases, prominent calcaneous |
||||||||||
| mult 2-10 |
female/ 5y |
PBL | de novo | 48,XX,+mar1,+mar2[16%]/ 47,XX,+mar1[26%]/ 47,XX,+mar2[22%%] 46,XX[36%] |
mar1 = min(6)(:p11.2→q12:)* mar2 = min(11)(:p11.11→q11:)* |
SKY proximal YAC probes for 6p and 6q |
see below | {11} | ||
|
Born at 40 wk gestation after a pregnancy complicated by hypertension. Birth weight 3,650 g, length 54 cm, head circumference 37 cm. Apgar index 7/8/9, pH of umbilical arterial blood 7.31. Child hypotonic, developed difficulties in breathing, followed by a transient cyanosis. Child presented a variety of craniofacial dysmorphic features: frontal bossing; severe hypoplasia of the middle face with a broad nasal bridge; a down-turned mouth with thin lips; large, dysplastic ears; an atypical furrow of the fourth left finger; premature synostosis of the sagittal and basal parts of the coronary sutures; Postnatal sonography revealed an atrial septum defect, a persistent ductus arteriousus botallo, and hypoplasia of the left kidney. Neurologically, nystagmus in combination with divergent strabismus was noted. At the age of 5 y considerable motor difficulties, especially in regard to motor coordination; however, verbal abilities were nearly in accordance with age. |
||||||||||
| mult 2-11 |
female twins/ 1m? |
PBL skin Fibroblasts |
de novo | Twin A: 48,XX,+r1,+r2[35]/ 47,XX,+r1[7]/ 47,XX,+r2[8] Twin B: 48,XX,+r1,+r2[33]/ 47,XX,+r1[12]/ 47,XX,+r2[3]/ 46,XX[2]in fibroblasts 30%/4%/54%/12% |
r1 = r(1)(::p13→q21::) r2 =
|
all centromeric probes | see below | {12} | ||
|
Twins born in week 25/26: weight 632-672g; Apgar scores 5/7; no dysmorphic features after birth detected; both with grade II intraventricular hemorrhage and stage III, zone III retinopathy of prematurety. |
||||||||||
| mult 2-12 |
male/ 20m |
PBL | de novo | 48,XY,+r1,+r2[20%]/ 47,XY,+r1[40%]/ 47,XY,+r2[40%] |
r1 = r(13 or 21) r2 = r(18) |
FISH with all available centromeric probes | see below | {14;15} case 20 | ||
|
multiple congenital abnormalities; at birth he had a truncus arteriousus type I; atrial and ventricular septal defects, A-V canal, sepsis, pyloric stenosis, seizures resulting from front-parieto-temporal intracranial hemorrhage; at 11m he sat, crawled, walked, smiled, babbled and developmentally normal; at 20m weight at 70-90th percentile, OFC at 2. percentile, internal strabismus, malformation of T-12 vertebrae, levo scoliosis, microphallus |
||||||||||
| mult 2-13 |
female/ 22y/ daughter/ 1w |
PBL | de novo in mother | 47,XX,+r1[53%]/ 47,XX,+r2[4%]/ 46,XX[43%] mother 48,XX,+r1,+r2[10%]/ 47,XX,+r1[10%]/ 47,XX,+r2[40%]/ 46,XX[40%] daughter |
r1 = r(13 or 21) r2 = r(12) |
FISH with all available centromeric probes | see below | {14;15} case 21a and 21b | ||
|
mother: developmental delay and heart murmur, bilateral postaxial polydactyly, neonatal rectal fissure, umbilical hernia, minor cerebral palsy, learning disabilities, low normal intelligence |
||||||||||
| mult 2-14 |
male/ prenatal |
AF/PBL | de novo | 48,XY,+r1,+r2[67%]/ 47,XY,+r1[28%] 46,XY[5%%] (in PBL 42%/42%/16%) |
r1 = r(3) r2 = unknown (only tested for 2, 8, 13/21, 14/22, 15, 18, 20, X, Y no additional material available) |
FISH with all available centromeric probes | normal at birth | {16} case 28 | ||
| mult 2-15 |
female/ 1w |
PBL | de novo | 48,XX,+mar1,+mar2[?]/ 47,XX,+mar1[?] 47,XX,+mar2[?] |
mar1: r(9)(::p13.2→q10~11::) mar2: r(18)(::p11.23→q12.1::) |
M-FISH; different FISH probes (BACs) | initially Down syndrome suspected | {20} | ||
| mult 2-16 |
male/ child |
PBL | de novo | 48,XY,+mar1,+mar2[?]/ 47,XY,+mar1[?]/ 47,XY,+mar2[?]/ 46,XY[?] |
mar 1: mar(11) mar2: ? |
different cep-probes | mild psychomotor delay | {21} case 4 | ||
mult 2-17 |
female/ prenatal |
AF and PBL | paternal ? 2/100 cells with mar |
48,XX,+2mar[23]/ 47,XX,+mar[10]/ 46,XX[8] from AF; 48,XX,+2mar[7]/ 47,XX,+mar[7]/ 46,XX[1] from PBL |
r(X)(::p11.2→q12::) inv dup(15)(:q11.1→q11.2:) X-chr.: 57.73-64.59 chr. 15: 0.00-21.05 |
midi, array-CGH | see below | {0}provided by Dr. A Dufke, Tübingen, Germany | ||
|
advanced maternal age, previous pregnancy with hydrops fetalis and 45,X; this pregnancy was carried on and a normal female baby was born, (weight: 3500g, length 36cm, OFC 36cm, APGAR 9/10/10. Now at 8y acc. to mother no abnormalities, only growth delay; no mental problems. |
||||||||||
| mult 2-18 |
female/ 6y |
PBL (EKF- cellbank) |
n.a. | 48,XX,+mar1,+mar2[101]/ 47,XX,+mar1[38]/ 47,XX,+mar2[29]/ 46,XX[5] |
min(4)(:p12→q12:); r(18)(::p11.21→q11.2: :p11.21→q11.2::)[2]/ inv dup(18)(:p11.1→q11.1: :q11.1→p11.1:)[4]/ min(18)(:p11.21→q11.1: :q11.1→p11.1:)[4] chr 4: 48.34-59.71 chr. 18: 13.17-18.73 |
M-FISH, subcenM; midi array-CGH; UPD-test |
dysmorphic features, multiple congenital malformations | {0} {27} case MK {28}case 15 |
||
| mult 2-19 |
female/ 8y |
PBL (EKF- cellbank) |
n.a. | 49,XX,+3mar[1]/ 48,XX,+2mar[10]/ 47,XX,+mar[9]/ 46,XX[3] |
r(5)(::p11→q11.1: :q12→13.1~3::) 40.66MB to 47.10MB min(6)(:p11.1→q11.2:); 57.10MB to 64.87MB |
MCB; subcenM; midi; array-CGH | see below | {0} {24} |
||
|
born at term in week 40; length 51 cm, weight 3580g, OFC 35cm; small fontanels and epicanthus on both sides but normal after birth; OFC developed along 3rd centile; adiposities; developmental retardation; At 6 y, adiposities, telecanthus, epicanthus and other minor dysmorphism. mental and developmental retarded. As young adult woman living independently and normal life with profession in health care system. |
||||||||||
| mult 2-20 |
male/ 10y |
PBL | de novo | 48,XX,+mar1,+mar2[68]/ 47,XX,+mar1[19]/ 47,XX,+mar2[6]/ 46,XX[8] |
r(Y)(::p11.3→q11.2::) r(8)(::p11→q11::) |
midi; some probes as specified in {22}; UPD-test for #8 | see below | {22} | ||
|
Born at term; birth weight: 2,900 g, birth length 48 cm. At 10y learning difficulties and severe speech delay. Motor development was normal, speech development delayed and began at age 6 y. At the age of gynecomastia (Tanner stage 2), mild eunuchoid overgrowth (165 cm, height of the mother was 175 cm and of the father was 175 cm), mild obesity (68.5 kg), and normal head circumference; mild facial anomalies including long face, lateral hypoplasia of eyebrows, almond shaped eyes, epicanthic folds, broad bulbous nose, thin upper lip, down-turned corners of the mouth, small teeth, narrow palate, and large ears with mildly dysplastic pinnae and thickened helix. Fingers and toes slender, body hair decreased. Computed tomography of brain normal. At age of 13 y poor language, speech, and writing skills, including ungrammatical speech, articulation dyspraxia, and a vocabulary below age-appropriate standards. Nonverbal abilities and memory normal. |
||||||||||
| mult 2-21 |
male/ 3y |
PBL (EKF- cellbank) |
de novo | 49,XY,mar2x2[7]/ 48,XY,mar1,mar2[52]/ 47,XY,mar1[37]/ 46,XY[4] |
r(8)(:p12→q11.1: |
M-FISH, subcenM array-CGH; UOD-test for #21 |
see below | {0} {27} case NP {28}case 16 {36} |
||
|
Intrauterine and postnatal growth retardation, at 6y microcephaly, brachycephaly, hypotonia, psychomotor retardation, partial agenesis of corpus callosum abnormal dermatoglyphic patterns and facial dysmorphism (slant up palpebral fissures, anteverted nares, relatively large ears, prominent lower lip, long philtrum) |
||||||||||
| mult 2-22 |
male/ prenatal |
AF | n.a. | 48,XY,+mar1,+mar2[100%] | mar1 = mar(13/21) mar2 = mar(17) |
n.a. | see below | {25} case 105 | ||
|
Abnormal ultrasound findings; duodenal atresia, polyhydramnions stillbirth |
||||||||||
| mult 2-23 |
female/ prenatal |
AF | n.a. | 48,XX,+mar1,+mar2[8]/ 47,XX,+mar1[7] |
mar1 = mar(13/21) mar2 = non-acrocentric |
n.a. | positive multiple marker serum screen; normal at 3 momths | {25} case 106 | ||
| mult 2-24 |
female/ prenatal |
AF | de novo | 48,XX,+mar1,+mar2[8]/ 47,XX,+mar1[5]/ 47,XX,+mar2[3]/ 46,XX[8] |
mar1 = mar(18) mar2 = no result |
n.a. | advanced maternal age; TOP | {25} case 107 | ||
| mult 2-25 |
female / prenatal |
AF | de novo | 48,XX,+mar1,+mar2[1]/ 47,XX,+mar1[8]/ 47,XX,+mar2[4]/ 46,XX[6] |
mar1 = min(1)(:p11.1→q12:) mar2 = min(8)(:p11.21→q11.1:) |
cenM; subcenM | fallot tetralogy and diaphragmic hernia in week 18 (US), child born and died after a few days | {0} provided by Dr. Mehnert, Neu-Ulm, Germany | ||
| mult 2-26 |
female / adult |
PBL | n.a. | 48,XX,+2mar[50%]/ 47,XX,+mar[50%] |
r(7)(::p11.2→q11.21::)[10]/ r(7)(::p11.2→q11.21: :p11.2→q11.21::)[2] and min(13)(pter→q12.1:) |
cenM; subcenM; UPD-test | see below | {0} provided by Dr. Michal Sagai, Israel | ||
|
Patient mildly mentally impaired and that her husband is likewise. She was a slow developer as a child, and her parents thought she may have had mild cerebral palsy. However she is a completely functioning adult - was working in an office job, looking after a household, and a very conscientious mother. She is slightly dysmorphic - has a slightly coarse face with a prominent lower jaw. sSMC 7 is present in 11/100 buccal mucosa cells |
||||||||||
| mult 2-27 |
n.a./ postnatal |
PBL | n.a. | 48,+mar1,+mar2[36%]/ 47,+mar1[36%]/ 47,+mar2[28%] |
mar1: min(11)(:p10→q12.1:) distal clone in 11q RP11-736I10 (59.61MB) mar2: min(17)(:p11.2→q10:) distal clone in 17p RP11-64J19 (21.01MB) |
array-CGH | multiple congenital abnormalities | {26} case 6 {31} case 10 |
||
| mult 2-28 |
female/ 4 m |
PBL | n.a. | 48,XX,+mar1,+mar2[16]/ 47,XX,+mar2[4] |
mar1: min(8)(:p11.1→q11.21~11.22:) mar2 min(11)(:p11.1→q11.1:) |
cenM; subcenM | prematurity | {0} provided by J. Anderson, Brisbane, Australia | ||
| mult 2-29 |
female/ 42 y |
PBL | n.a. | 49,XXX,+mar1,+mar2/ 48,XXX,+mar1 |
mar1: inv dup 14/22(q11.1) mar 2: inv dup(15)(q11.1) |
midi; cep probes, array-CGH | normal female, mar 1 detected in child | {0} provided by Dr. Gloning München | ||
| mult 2-30 |
male/ 8y |
PBL | de novo | 48,XY,+mar1,+mar2[13]/ 47,XY,+mar1[9]/ 47,XY,+mar2[13]/ 46,XY[19] |
markers not specified in detail: mar(13/21)(?pter→q12.11:) breakpoint in q at 20.83MB min(17)(:p11.2→q11.2:) breakpoint in p at 20.59MB and in q at 25.72MB sSMC 17 derived from maternal chromosome 17 |
BACS as specified in {33}; array-CGH (SNP-chip); UPD-test for #17 | see below | {33} | ||
|
At birth: 2,994 g; as baby: hypotonia and micrognathia. Sitting at 9m, crawling at 1y, walking at 18m; at 6y IQ 40; at 8y developmental delay, verbal and oral apraxia, oropharyngeal dysphasia, uses an augmentative communication device at school and has a 10-word vocabulary. Hearing evaluations have been normal. Autism, significant inattention and hyperactivity. Also had a single febrile seizure and EEG abnormalities and ophthalmologic abnormalities including hypermetropia, esotropia, and astigmatism. Normal anthropomorphic measurements. Also present mild dysmorphic features including a prominent forehead and a high arched palate. Three hair whorls were present. Chest exam revealed a mild pectus excavatum. There was mild fifth finger clinodactyly bilaterally and hyperextensibility of the digits. An MRI of the brain showed mild inferior cerebellar vermian hypoplasia and mild thinning of the corpus callosum. A sleep study was normal with the exception of an abnormal EEG showing prominent spike and wave activity. |
||||||||||
| mult 2-31 |
male/ postnatal |
PBL | n.a. | 48,XY,+mar1,+mar2/ 47,XY+mar/ 46,XY |
mar1 = min(9)(:p12→q12:) mar2= r(8)(::p21→q11.21::) |
cenM, subcenM, MCB | n.a. | {0} provided by Dr. C. Fuster, Spain | ||
| mult 2-32 |
female/ 1y |
PBL | n.a. | 48,XX,+mar1,+mar2[22]/ 47,XX,+8[21]/ 47,XX,+mar1[8]/ 46,XX[22] |
mar 1= min(8)(:p11.21→q11.1:) mar 2 = min(20)(:p11.2→q11.1:) |
cenM, subcenM, | multiple congenital malformations | {0} provided by Dr. A. Polityko, Minsk, Belarus | ||
| mult 2-33 |
female/ prenatal |
chord blood | n.a. | 48,XX,+mar1,+mar2[100%] | inv dup(13;21)(q11.1) dic(4;4)(:p12→q12: :p12→q12:) |
cenM, subcenM | see below | {0} provided by Dr. Horacek, Czech republic | ||
|
Autopsy result: female fetus, induced abortion at gestational week 22, length 28 cm. Facial dysmorphism, wide nose bridge, macroglossia, low-set ears. Body and limbs with no external abnormalities, no pathological findings (macro- and microscopically) on brain, lungs, kidneys, adrenal gland, gallbladder, external and internal female genitalia, morphology corresponding with the gestational age. |
||||||||||
| mult 2-34 |
female/ postnatal? |
PBL? | n.a. | 48,XX,+mar1,+mar2[93%]/ 46,XX[7%] |
mar 1= min(13)(pter→q12.12:) mar 2 = mar(20)(:p11.21→q11:) |
array-CGH | abnormal | {34} case 25862 | ||
| mult 2-35 |
male/ postnatal? |
PBL? | n.a. | 48,XY,+mar1,+mar2[21%]/ 46,XX[89%] |
mar 1= min(13)(pter→q12.11:) mar 2 = mar(X)(:?::Xp22.31→Xp22.31: :Xp22.2→Xp22.12: :?→cen?:) |
array-CGH | abnormal | {34} case 27978 | ||
| mult 2-36 |
female/ postnatal? |
PBL? | n.a. | 48,XX,+mar1,+mar2[63%]/ 46,XX[37%] |
mar 1= mar(4)(:p13→q12:) mar 2 = min(13)(pter→q12.11:) |
array-CGH | abnormal | {34} case 31633 | ||
| mult 2-37 |
female/ postnatal |
PBL | de novo | 48,X,+mar1,+mar2[20]/ 46,X,+mar1[12] |
mar 1= inv dup(13or21)(q11.1) mar 2 = inv dup(Y)(q11.2) |
cep probes, subcenM, SRY | nanosomia | {0} | ||
| mult 2-38 |
male/ postnatal |
PBL | de novo | 48,XY,+mar1,+mar2[100%] | mar 1= min(16)(:p11.1→q12:) mar 2 = min(20)(:p11.2→q11.1:) |
cenM, subcenM, | nanosomia | {0} provided by Dr. Zivi Borochowitz; Israel | ||
Cases with sSMC derived from 3 different chromosomes
| 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 | ||
| mult 3-1 |
male/ prenatal |
AF Fibroblasts |
de novo | 49,XY,+r1,+r2,+r3/ 48,XY,+r1,+r2/ 48,XY,+r1,+r3/ 47,XY,+r1/ 47,XY,+r2/ 47,XY,+r3/ 46,XY |
r1 = r(4;4)[~53%].ish (cep++;wcp-) r2 = r(17)[~55%].ish (cep+;wcp-) r3 = r(20)[~30%].ish (cep+,wcp+) |
all centromeric probes and wcp probes | amniocentesis due to advanced maternal age; pregnancy terminated in week 21; fetal pathology showed minor dysmorphic features (slight brachycephaly, large anterior fontanels, hypertelorism, nuchal thickening) | {1} case 1 | ||
| mult 3-2 |
male/ prenatal |
AF | de novo | 49,XY,mar1,+mar2, +mar3[?]/ 48,XY,+mar1,+mar2[7] |
mar1 = mar(12) mar2 = mar(19) mar3= mar(13/21) |
n.a. | amniocentesis due to abnormal ultrasound findings; at birth developmental delay and dysmorphic features | {25} case 103 | ||
| mult 3-3 |
male/ prenatal |
AF | de novo | 48-50,XY,+r, +1-3mar[11]/ 47-49,+1-3mar[10] |
mar(4); mar(8), mar(non-acrocentric) | n.a. | amniocentesis due to advanced maternal age; normal at 20 months | {25} case 104 | ||
| mult 3-4 |
female/ prenatal |
AF skin fibroblasts |
de novo | 47~50,XX,+mar1, +mar2,+mar3[cp50] |
mar(3); mar(7); mar(8) |
all centromeric probes, all wcp probes | amniocentesis due to enhanced Down syndrome risk after prenatal serum screening, normal ultrasound; TOP in week 22; autopsy: small VSD, cliteromegaly, pulmonary segmental defects | {29} | ||
| mult 3-5 |
male/ 4m |
PBL (EKF- cellbank) |
de novo | 49,XY,+3mar[13]/ 48,XY,+2mar[22]/ 47,XY,+mar[23]/ 46,XY[2] |
r(4)(::p12→q12::) r(8)(::p11.21→q11.21::) r(11)(::p11.12→q11.1::) |
cenM; subcenM |
Pierre-Robin-sequence, ventricular septum defect, patent foramen ovale, cryptochism, flaccid joints, gothic palate, umbilical hernia, at birth urinary tract infection | {0} | ||
| mult 3-6 |
male/ 4y |
PBL | de novo | 49,XY,+3mar[9]/ 48,XY,+2mar[25]/ 47,XY,+mar1[13]/ 47,XY,+mar2[14]/ 46,XY[3] |
mar1 = mar(5)(:p11→q11.2:) 49.73-52.94MB mar2 = mar(8)(:p21.1→q11.22:) 19.15-51.87MB mar3 = min(9)(:p13.3→q11:) 34.25-39.18MB |
array-CGH; | Mental retardation, hypertelorism, upslanting palpebral fissures, bifid uvula, hypospadias, right testicular ectopia, syndactyly toes 2 and 3, obesity | {37} case P-14 | ||
| mult 3-7 |
female/ 15y |
PBL | de novo | 49,XX,+3mar[?%]/ 48,XX,+2mar[?%]/ 47,XX,+mar[?%] |
mar1 = min(2)(:p11.2→q11.2:) 88.11-99.00MB mar2 = min(3)(:p12.1→q11.1:) 86.20-90.26MB mar3 = min(7)(:p11.21→q11.1:) ?-.MB |
array-CGH; | Short stature, short webbed neck, low hair line, short hands, stubby fingers, generalized hypotonia, short 3-4 toes | {37} case P-15 | ||
| mult 3-8 |
male/ newborn |
PBL | de novo | 50,XY,+mar1, +mar2, +mar3, +mar4[16]/ 49,XY,+mar1, +mar2, +mar3[28]/ 48,XY,+mar1,+mar2[48]/ 47,XY,+mar1[8] |
mar 1 = der(19) mar 2 = der(11) mar 3 = mar1 mar 4 = der(11;19) #11: 48.84-58.75MB #19: 23.36-34.85MB |
array-CGH, cep probes | IUGR; oligohydramnion; birth weight at 23rd centile, lenght at 52nd, OFC at 36th; at 3m: hypersomnia. pneumonia, hypotonia, dysmorphic face and others | {38} | ||
´
Cases with sSMC derived from 4 different chromosomes
| 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 | ||
| mult 4-1 |
female/ 1m |
PBL | de novo (?) paternal chrs. not tested. | 47-50,XX,+1-4mar/ 46,XX |
r(4)[77%] r(8)[46%] r(10)[13.5%] r(X)[13.5%] (cep+ and wcp+) |
all centromeric probes and wcp probes | see below | {1} case 2 | ||
|
Child born at term; child appeared hypotonic with hypertelorism, micrognathia and full neck. Developmental milestones were reached at appropriate age at 35m , 3y and 4y. Exception: gross motor delay caused by excessive joint laxity. At 4y slim build and slightly long face with epicantic folds. |
||||||||||
| mult 4-2 |
male/ 7m |
PBL | de novo | 52,XY,+marx6[1]/ 51,XY,+marx5[15]/ 50,XY,+marx4[19]/ 49,XY,+marx3[13]/ 48,XY,+marx2[2] |
mar 1 = r(7)[82%] mar 2 = r(15)[74%] mar 3 = r(22) mar 4 = r(22)[64%] mar 3+mar 4 [6%] mar 5+mar 6 = r(?5) no clear clarification of mosaic status |
SKY; telomeric probes |
developmental delay, poor feeder, marked hypotonia, macroglossia, low set ears. | {9} case 1 | ||
| mult 4-3 |
male/ 58y |
PBL | n.a. | see below | min(1) min(5) min(6) min(7) no clarification of mosaic status |
SKY | detected due to fragile X suspicion according to following symptoms: mental retardation, impaired speech, dysmorphic features. | {9} case 2 | ||
|
51,XY,+mar1-3,+mar5-6[1]/50,XY,+mar1-4[1]/50,XY,+mar2-3,+mar5-6[1]/49,XY,+mar1-3[19]/49,XY,+mar2-4[1]/ |
||||||||||
| mult 4-4 |
female/ prenatal |
AF/PBL | de novo | 51,XX,+5mar[?%]/ 50,XX,+4mar[majority]/ 49,XX,+3mar[?%]/ 48,XX,+2mar[?%] |
mar 1 = der(11)r(4;11)(::11q11→11q12.1: :4q12::) mar 2 = der(7)(:p11.1:) mar 3 = der(1)(:p12:) mar 4 = der(X)(:p11.1→q11.1:) |
array CGH; SKY; | see below | {30} case 4 | ||
|
prenatal: bilateral cleft lip anomaly, ventriculomegaly, and possible agenesis of the corpus callosum. At birth, bilateral cleft lip anomaly, flattened nasal profile (nasomaxillary hypoplasia), upslanting palpebral fissures. MRI of brain showed fusion of the frontal lobes and thalami, partial agenesis of the corpus callosum, consistent with a semilobar holoprosencephaly. Echocardiogram: normal intracardiac structure with patent ductus arteriousus |
||||||||||
| mult 4-5 |
male/ 30y |
PBL | de novo | 50,XY,+mar1,+mar2, +mar3,+mar4[10%] |
min(6)(:p11.1→q11.1:) min(8)(:p11.1→q11.1:) min(11)(:p11.11→q11:) min(12)(:p12.1→q10:) |
cenM, subcenM | see below | {35} | ||
|
born after 39 gestational weeks by caesarean section because of macrosomy showing a weight of 4,250 gr (p> ), and an Apgar of 3, needing intensive reanimation. With 5 hours of life he suffered apnea for two minutes, as well as hypoglucemia and hypocalcemia that were treated having good respond and never happened again. Clinical examination showed bilateral cryptorchidism. During pregnancy the only relevant fact to be consider was that the mother was treated with Diazepam in late pregnancy. When the child was 19 months old, his weight and length were 2DS below normality. The child in his evolution showed psychomotor delay, starting deambulation when he was 22 months old, and a bilateral convergent strabismus. When he was 10 years old, the testes were surgery descended. And at 13 years old, the strabismus was also corrected. At school he was always having slight learning difficulties, with normal social behaviour. Later on, he never study, becoming a painter. When he was 22 years old, with no facial dysmorphism, was remitted to a Genetic Laboratory (“unknown laboratory”) showing a weight of 89 kg (p<), a length of 165 cm (p<) and a Corporal index mass of 32.7. He had hypogenitalism, with a short thick penis (6cm), and testes with 8 and 10 cc. He has multiples hyperpigmented nevi all over his body (Fig. ) showing no sign of malignancy after biopsy. He also has a left vesicoureteral reflux grade III, with a normal renal function. The cardiologic, audition and fundus of the eye examinations were normal. Blood biochemistry was normal. |
||||||||||
Cases with sSMC derived from 5 different chromosomes
| 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 | ||
| mult 5-1 |
male/ 1w |
PBL; skin fibro |
n.a. | 51,XY,+mar1-5[20%] 50,XY,+mar1-4[47%] 49,XY,+mar1-3[29%] 48,XY,+mar1-2[4%] |
min(6) min(7) min(10) min(12) min(19) |
COBRA-FISH; centromeric probes; telomeric probe |
see below | {18} | ||
| born at term but the pregnancy was complicated by hydramnion and moderate hypertension in the 25th and 35th weeks, respectively. At birth APGAR score normal, length 55 cm (90-97centile), head circumference 37 cm, weight 4,880 g (>97 centile), placenta weight 1,145 g. Physical examination showed hypotonia, opisthotonos, broad nasal bridge, large lips, retrognathia, and proximally implanted thumbs. Auscultation revealed heart tones on the right side of the thorax and a chest X-ray disclosed a total situs inversus and an atrium septal defect (confirmed by ultrasound). I.V.P. showed renal cysts. A CT-scan of the brain revealed slight widening of the ventricles, agenesis of the corpus callosum with normal sulci. For the first 6 months, the child experienced drinking problems, esophageal reflux, vomiting, and apnoeic attacks. Tetraplegia and psychomotor retardation became gradually apparent. The child died suddenly at home at the age of 7 months. Permission for post-mortem examination was not granted. | ||||||||||
| mult 5-2 |
male/ prenatal |
CH | n.a. | 50~55,XX,+4~9mar | min(X)(:p11.1→q11.1:) min(1)(:p11.1→q11:) or min(5)(:p11→q11.1:) or min(19)(::p11→q11:) r(12)(::p11.2→q11.1::) min(13)(:p11.1→q12.1:) min(16)(:p11.1→q11.1:) |
cenM, subcenM | hypotroph fetus with enhanced nuchal translucency, hexadactyly and omphalocoele. TOP. | {0 provided by Dr. Mau-Holzmann, Tübingen, Germany | ||
| mult 5-3 |
n.a./ prenatal |
CH | n.a. | mos 47-?50,XN,+mar1-?6 | min(4) (:p12→q12:) min(6) (:p11.1→q11.1:) min(9) (:p12→q12:) min(14) (:p11.1→q11.1:) min(22) (:p11.1→q11.1:) |
cenM, subcenM; aCGH | TOP | {0 provided by Dr. Volleth, Magdeburg, Germany | ||
Cases with sSMC derived from 6 different chromosomes
| 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 | ||
| mult 6-1 |
male/ 47y |
PBL | de novo | 47-52,XY,+mar1-6[30] | see below | midi; all centromeric probes and YAC probes as specified in {13} |
moderate mental retardation; no dysmorphism | {13; 0} | ||
|
r(1)(::p11.1→q21.1:)[12]/r(1)(::q21.1→p11.1::p11.1→q21.1::)[5]/min(1)(:p11.1→q21.1:)[2]/ |
||||||||||
| mult 6-2 |
female/ 6y |
PBL | de novo | 47-52,XX,+mar1-6[50] | see below | all cep probes; wcp probes for markers; array CGH | mild developmental delay, dysmorphic features, impaired speech, II-III toes syndactily, velar deficiency, height: 123.5cm (+1SD), weight 31kg (+4SD), head circumference -1SD, anxious, behavioral problems. | {32} | ||
|
mar(3)(:p12.3→q13.13:)[58%] array-CGH: RP11-59E22 to RP11-71D1; mar(12)(:p11.22→q12:)[100%] array-CGH: RP11-780A5 to RP11-490D11; mar(13 or 21); mar(22) [18%]; mar(X) [18%]; 6th DAPI positive marker not identified [2%] |
||||||||||
Cases with sSMC derived from 7 different chromosomes
| 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 | ||
| mult 7-1 |
male/ prenatal |
AF/PBL (EKF- cellbank) |
de novo | 49-53,XY,+mar1-7[100%] | r(11) in ~84% ?r(1) in ~90% ?r(3) in ~80% min(X) in ~88% min(20) in ~74% min(14) in ~94% min(21) in ~83% |
midi; all centromeric probes wcp probes |
see below | {17} | ||
|
detected prenatally due to suggested bladder outlet obstruction in ultrasound; child born in 36. week with 3190g, 52cm, OFC 35.3cm; Apgar 9/10/10; mild macrocephaly, unilateral hydronephrosis, at 4m (psychomotor) development normal, |
||||||||||
| mult 7-2 |
male/ prenatal |
AF/PBL | de novo (? - father n.a.) | 49-53,XY,+mar1-7[100%] | see below | all centromeric probes | detected prenatally due to advanced maternal age; normal in ultrasound, baby born in week 36 of gestation; grossly normal (also at age of 2 y) apart from hypospadia and undescended testes | {23} | ||
|
Amniocytes: mar(1/5/19),mar(6),mar(9)[27]/mar(1/5/19),mar(6),mar(9),mar(13/21)[23]/ |
||||||||||