PT - JOURNAL ARTICLE AU - Utkus, Algirdas AU - Sorokina, Irina AU - Kucinskas, Vaidutis AU - Röthlisberger, Benno AU - Balmer, Damina AU - Brecevic, Lukrecija AU - Schinzel, Albert TI - Duplication of segment 1p21 following paternal insertional translocation, ins(6;1)(q25;p13.3p22.1) AID - 10.1136/jmg.36.1.73 DP - 1999 Jan 01 TA - Journal of Medical Genetics PG - 73--76 VI - 36 IP - 1 4099 - http://jmg.bmj.com/content/36/1/73.short 4100 - http://jmg.bmj.com/content/36/1/73.full SO - J Med Genet1999 Jan 01; 36 AB - A moderately mentally retarded 3 year old boy showed minor anomalies including a prominent forehead and flat occiput, exophthalmos, large and prominent ears, high arched palate, umbilical hernia, sacral dimple, and irregular position of the toes. Cardiac sonography disclosed a chorda running through the left ventricle. Cytogenetic investigation of the family showed a balanced insertional translocation of segment 1p13→p22 into distal 6q in the father which had led, through unbalanced segregation, to duplication of 1p13.3→p22.1 in the proband. Familial duplication of such a small interstitial segment of 1p has not been reported previously, and the paucity of abnormal physical findings in the proband compared to previous patients with a similar aberration is remarkable.