2018, Number 4
Antenatal diagnosis of de novo balanced structural chromosome aberrations in Latin America
Language: English
References: 55
Page: 27-34
PDF size: 100.15 Kb.
ABSTRACT
INTRODUCTION The consequences of de novo balanced structural chromosome aberrations diagnosed antenatally are unpredictable, and, as a result, they introduce uncertainty into genetic counseling decisions.OBJECTIVE Describe de novo balanced structural aberrations present at antenatal diagnosis in samples from pregnant women in five Latin American countries and determine their effect on carrier individuals.
METHODS This was a retrospective observational study based on analysis of 109,011 antenatal tests conducted from January 1981 to December 2016 in Cuba, Uruguay, Costa Rica, Mexico, and Colombia. Thirteen cytogenetic laboratories provided information that included the cases analyzed during the study period; number of de novo balanced structural aberrations diagnosed antenatally; number of diagnoses with de novo balanced structural aberrations that resulted in termination of pregnancy; detailed descriptions of the karyotypes of de novo balanced structural aberration carriers, and descriptions of the form of diagnosis, including types of samples used (amniotic fluid, chorionic villus or fetal blood). Each laboratory also provided pathology reports and genetic counseling at time of diagnosis. Postnatal followup for pregnancies carried to term continued for at least two years.
RESULTS Of the 109,011 antenatal tests studied, 72 (0.07%) showed de novo balanced structural aberrations. These events primarily involved chromosomes 1, 2, 7, 14, 18, and 20. Of the 79 breakpoints identified, the most common were 5p15.3, 7q11.2, 7q22, and 14q24. We identified three breakpoints corresponding to 3.8% (3q13.1, 3q13.2, and 9p12) that were not reported in other studies of de novo balanced structural aberrations diagnosed antenatally in patients from other geographic regions or in studies of chromosomal fragile sites. Two of these breakpoints (3q13.1 and 3q13.2) were associated with high risk of phenotypic abnormalities. Information on antenatal or postnatal followup was available for 62 (86%) of de novo balanced structural aberration carriers; of the 44 carriers with postnatal followup, 10 had phenotypic abnormalities.
CONCLUSIONS Three new de novo breakpoints were identified, presumably related to genetic admixture characteristics in Latin America. Since some diseases associated with de novo balanced structural aberrations detected antenatally have a late onset, followup for at least two years is recommended for carriers of these aberrations. The information in this study is useful in genetic counseling for pregnant women in Latin America.
REFERENCES
Bugge M, Bruun-Petersen G, Brondum-Nielsen K, Friedrich U, Hansen J, Jensen G, et al. Disease associated balanced chromosome rearrangements: a resource for large scale genotype–phenotype delineation in man. J Med Genet [Internet]. 2000 Nov [cited 2018 Jun 5];37(11):858–65. Available from: https://www .ncbi.nlm.nih.gov/pmc/articles/PMC1734480/
Feenstra I, Hanemaaijer N, Sikkema-Raddatz B, Yntema H, Dijkhuizen T, Lugtenberg D, et al. Balanced into array: genome-wide array analysis in 54 patients with an apparently balanced de novo chromosome rearrangement and a meta-analysis. Eur J Hum Genet [Internet]. 2011 Nov [cited 2018 Jun 5];19(11):1152–60. Available from: https:// www.ncbi.nlm.nih.gov/pmc/articles/PMC3198145/
Warburton D. D e novo balanced chromosome rearrangements and extra marker chromosomes identifi ed at prenatal diagnosis: clinical signifi cance and distribution of breakpoints. Am J Hum Genet [Internet]. 1991 Nov [cited 2018 Jun 5];49(5):995–1013. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC1683246/
Cheng CP, Chern SR, Lee CC, Lin CC, Li YC, Hsieh LJ, et al. Prenatal diagnosis of de novo t(2;18;14)(q33.1;q12.2;q31.2),dup(5)(q34q34), del(7) (p21.1p21.1), and del(10)(q25.3q25.3) and a review of the prenatally ascertained de novo apparently balanced complex and multiple chromosomal rearrangements. Prenat Diagn [Internet]. 2006 Feb [cited 2018 Jun 5];26(2):138–46. Available from: https://obgyn .onlinelibrary.wiley.com/doi/full/10.1002/pd.1369
Sinnerbrink IB, Sherwen A, Meiser B, Halliday J, Amor DJ, Waters E, et al. Long-term health and development of children diagnosed prenatally with a de novo apparently balanced chromosomal rearrangement. Prenat Diagn [Internet]. 2013 Sep [cited 2018 Jun 6];33(9):831–8. Available from: https://obgyn.onlinelibrary.wiley.com/doi/ abs/10.1002/pd.4131
Méndez-Rosado LA, Hernández-Pérez G, Palencia-Céspedes D, Quiñones-Maza O, Barrios-Martínez A, Suárez-Mayedo U. [Structural aberration mosaicism, incidence and prenatal consequences]. Rev Cubana Genet Comunit [Internet]. 2007 [cited 2018 Jun 6];1(1):34–6. Available from: http://bvs.sld.cu/ revistas/rcgc/v1n1/gco06107.pdf. Spanish.
Quiñones-Maza OL, Méndez-Rosado LA, Quintana-Aguilar J, Suárez-Mayedo U, García-Rodríguez M, Barrios-Martínez A, et al. [Structural chromosomal rearrangement for prenatal and postnatal cytogenetic studies reference to types and carrier sex]. Rev Cubana Obstet Ginecol [Internet]. 2015 [cited 2018 Jun 6];41(1):10–3. Available from: http://bvs .sld.cu/revistas/gin/vol41_1_15/gin02115.htm. Spanish.
Fortes-Lima C, Bybjerg-Grauholm J, Marin- Padrón LC, Gomez-Cabezas EJ, Bækvad- Hansen M, Hansen CS, et al. Exploring Cuba–s population structure and demographic history using genome-wide data. Sci Rep [Internet]. 2018 Jul 30 [cited 2018 Aug 6];8(1):11422. Available from: http://dx.doi.org/10.1038/s41598 -018-29851-3
Mao X, Bigham AW, Mei R, Gutiérrez G, Weiss KM, Brutsaert TD, et al. A genome wide admixture mapping panel for Hispanic/Latino populations. Am J Hum Genet [Internet]. 2007 Jun [cited 2018 Jun 6];80(6):1171–8. Available from: https:// ac.els-cdn.com/S0002929707610349/1-s2.0 -S0002929707610349-main.pdf?_tid=5d84abe6 -9fe7-4849-9cf6-a4108a8cf85e&acdnat=15283 13968_95eb00e34a8b4c34a65b45cf17d3d492
Tian C, Hinds DA, Shigeta R, Adler SG, Lee A, Pahl MV, et al. A genome wide single nucleotide polymorphism panel for Mexican American admixture mapping. Am J Hum Genet [Internet]. 2007 Jun [cited 2018 Jun 6];80(6):1014–23. Available from: https:// ac.els-cdn.com/S0002929707610210/1-s2.0 -S0002929707610210-main.pdf?_tid=a2beaa5d -4de2-4616-84c2-10d5ef8c6dde&acdnat=15283 13865_4d868de9496423e94d2e29048cbc002c
Hoggart CJ, Shriver MD, Kittles RA, Clayton DG, McKeigue PM. Design and analysis of admixture mapping studies. Am J Hum Genet [Internet]. 2004 May [cited 2018 Jun 6];74(5):965–78. Available from: https:// ac.els-cdn.com/S0002929707643626/1-s2.0 -S0002929707643626-main.pdf?_tid=e4c75ef1-002c-4fc1-a527 -cf35a7736b5a&acdnat=1528313763_d3ba64a 6bc1e6c63a167e8fd7982d4e7
Fickelscher I, Liehr T, Watts K, Bryant V, Barber JCK, Heidemann S, et al. The variant inv(2)(p11.2q13) is a genuinely recurrent rearrangement but displays some breakpoint heterogeneity. Am J Hum Genet [Internet]. 2007 Oct [cited 2018 Jun 7];81(4):847–56. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC2227935/pdf/AJHGv81p847
Peschka B, Leygraaf J, Hansmann D, Hansmann M, Schröck E, Ried T, et al. Analysis of a de novo complex chromosome rearrangement involving chromosomes 4, 11, 12 and 13 and eight breakpoints by conventional cytogenetic, fl uorescence in situ hybridization and spectral karyotyping. Prenat Diagn. 1999 Dec;19(12):1143–9.
Vasilevska M, Ivanoska E, Kubelka K, Sukarova- Angelovska E, Dimeska G. The incidence and type of chromosomal translocations from prenatal diagnosis of 3800 patients in the Republic of Macedonia. Balkan J Med Genet [Internet]. 2013 Dec [cited 2018 Jun 7];16(2):23–8. Available from: https://www.ncbi.nlm.nih.gov/ pmc/articles/PMC4001411/pdf/bjmg-16-02-23 .pdf
Redin C, Brand H, Collins RL, Kammin T, Mitchell E, Hodge JC, et al. The genomic landscape of balanced cytogenetic abnormalities associated with human congenital anomalies. Nat Genet [Internet]. 2017 Jan [cited 2018 Jun 7];49(1):36– 45. Available from: https://www.ncbi.nlm.nih.gov/ pmc/articles/PMC5307971/
Ordulu Z, Kammin T, Brand H, Pillalamarri V, Redin CE, Collins RL, et al. Structural chromosomal rearrangements require nucleotide-level resolution: lessons from nextgeneration sequencing in prenatal diagnosis. Am J Hum Genet [Internet]. 2016 Nov 3 [cited 2018 Jun 7];99(5):1015–33. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC5097935/pdf/main.pdf
Liehr T, Kosayakova N, Schröder J, Ziegler M, Kreskowski K, Pohle B, et al. Evidence for correlation of fragile sites and chromosomal breakpoints in carriers of constitutional balanced chromosomal. Balkan J Med Genet [Internet]. 2011 [cited 2018 Jun 7];14(2):13–6. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/ PMC3776699/pdf/bjmg-14-02-13.pdf
Quadrelli A, Vaglio A, Quadrelli R, Mechoso B, Fan YS, Huang T. High density array comparative genomic hybridization analysis and follow-up of a child with de novo complex chromosome rearrangement detected prenatally. Prenat Diagn [Internet]. 2007 Oct [cited 2018 Jun 7];27(10):982–3. Available from: https://obgyn .onlinelibrary.wiley.com/doi/epdf/10.1002/pd.1831