Summary
In our study, we found a recognizable pattern of the midface in three retinoblastoma patients with interstitial deletion of chromosome 13 in lymphocytes. Further photographs of patients reported by other authors confirmed our conclusion that the midface in children with interstitial deletion of 13q from q12 to q22, always involving q14, is characterized by prominent eyebrows, broad nasal bridge, bulbous tip of the nose, a large mouth with a thin upper lip, and a long philtrum. This midface pattern could not be recognized in patients with normal karyotypes, suggesting that the critical segment for the midface phenotype as well as for retinoblastoma may exist in band 13q14.
Similar content being viewed by others
References
Francke U, Kung F (1976) Sporadic bilateral retinoblastoma and 13q-chromosomal deletion. Med Pediatr Oncol 2:379–385
Grouchy J de, Turleau C, Cabanis MO, Richardet JM (1980) Rétinoblastome et délétion intercalaire du chromosome 13. Arch Fr Pediatr 37:531–535
Hoo JJ, Koch M, Ziemsen B, Foerster W, Nishigaki I (1982) Confirmation of regional assignment of gene for human esterase-D to chromosome band 13q14. Hum Genet 60:276–277
Howard RO, Breg WR, Albert DM, Lesser RL (1974) Retinoblastoma and chromosome abnormality. Arch Ophthalmol 92:490–493
Koch M, Foerster W (1982) Partielle Trisomie 13. In: Milupa “Blaue Reihe”. Klinische Genetik in der Pädiatric, 2nd Symposium in Kiel 1981 (in press)
Motegi T (1981) Lymphocyte chromosome survey in 42 patients with retinoblastoma: effort to detect 13q14 deletion mosaicism. Hum Genet 58:168–173
Motegi T (1982) High rate of detection of 13q14 deletion mosaicism among retinoblastoma patients (using more extensive methods). Hum Genet 61:95–97
Orye E, Delbeke MJ, Vandenabeele B (1974) Retinoblastoma and long arm deletion of chromosome 13. Attempts to define the deleted segment. Clin Genet 5:457–464
Riccardi VM, Hittner HM, Francke U, Pippin S, Holmquist GP, Kretzer FL, Ferrell R (1979) Partial triplication and deletion of 13q: study of a family presenting with bilateral retinoblastoma. Clin Genet 15: 332–345
Vogel F (1979) Genetics of retinoblastoma. Hum Genet 52:1–54
Wilson MG, Melnyk J, Towner JW (1969) Retinoblastoma and deletion D(14) syndrome. J Med Genet 6:322–327
Wilson MG, Towner JW, Fujimoto A (1973) Retinoblastoma and D-chromosome deletions. Am J Hum Genet 25:57–61
Wilson MG, Ebbin AJ, Towner JW, Spencer WH (1977) Chromosomal anomalies in patients with retinoblastoma. Clin Genet 12:1–8
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Motegi, T., Kaga, M., Yanagawa, Y. et al. A recognizable pattern of the midface of retinoblastoma patients with interstitial deletion of 13q. Hum Genet 64, 160–162 (1983). https://doi.org/10.1007/BF00327116
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00327116