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Borgaonkar DS. Chromosomal Variation in Man: A Catalog of Chromosomal Variants and Anomalies: Online NLM Version [Internet]. Bethesda (MD): National Center for Biotechnology Information (US); 1975-.

Cover of Chromosomal Variation in Man

Chromosomal Variation in Man: A Catalog of Chromosomal Variants and Anomalies: Online NLM Version [Internet].

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18q121

18q12.1
  • Courtens W, Grossman D, Van Roy N, Messiaen L, Vamos E, Toppet V, Haumont D, Streydio C, Jauch A, Vermeesch J R, Speleman F.: Noonan-like phenotype in monozygotic twins with a duplication-deficiency of the long arm of chromosome 18 resulting from a maternal paracentric inversion. Hum. Genet. 103:497-505, 1998. [PubMed: 9856497]
    Mother=46,XX,inv(18)(q21.1q22.3).,Twins=46,XY,rec(18)(pter->q21.1::q22.3->q21.1::q21.1->q12.1)
    The newborn twins had a Noonan-like phenotype.
    Aberration: IP,RE
    MIM#: 163950
    Chromosomal Aneuploidy: 18q-;18q+
    Index Terms: MZ twins,Noonan phenotype
  • Krasikov N, Thompson K, Sekhon G S: Monosomy 18q12.1 to 21.1: a recognizable aneuploidy syndrome? report of a patient and review of the literature. AJMG 43:531-534, 1992. [PubMed: 1376552]
    46,XX,del(18)(pter -> q12.1::q21.1 -> qter)de novo.
    Aberration: Interstitial deletion
    Chromosomal Aneuploidy: 18q-
    Positive band
  • Poissonnier M, Turleau C, Olivier-Martin M, Milleret-Proyart M J, Prieur M, Dubos M, Cabanis M O, Mugneret F, Blanc Ph, Noel L: Interstitial deletion of the proximal region of the long arm of chromosome 18, del(18q12) a distinct clinical entity? a report of two new cases. Ann. Genet. 35:146-151, 1992. [PubMed: 1466563]
    Case 1, JP.
    47,XX,+mar,del(18)(q12.1q12.3).&Father:47,XY,+mar.
    The 2.4 year old patient was evaluated because of psychomotor retardation.
    Case 2, VG.
    46,XY,del(18)(q12.1q12.3)de novo.
    Patient was seen at 23 months because of febrile convulsions.
    Aberration: Interstitial deletion
    Chromosomal Aneuploidy: 18q-
    Positive band
  • Strathdee G, Harrison W, Riethman H C, Goodart S A, Overhauser J: Interstitial deletions are not the main mechanism leading to 18q deletions. AJHG 54:1085-1091, 1994. [PMC free article: PMC1918195] [PubMed: 8198131]
    Patient JL111:
    46,XX,del(18)(q22.1qter).
    Patient JL143:
    46,XY,del(18)(q22.1qter).
    Patient JL156:
    46,XY,del(18)(q21.3qter).
    A human telomeric YAC clone was used.
    Patient JL208:
    46,XY,del(18)(q12.1q21.3).
    Aberration: TD,ID
    MIM#: 601808
    Chromosomal Aneuploidy: 18q-
    Index Terms: Telomere
    Positive band
  • Wolff D J, Schwartz M F, Cohen M M, Schwartz S: Precise mapping of a de novo duplication 18(q21 to q22) utilizing cytogenetic, biochemical, and molecular techniques. AJMG 46:520-523, 1993. [PubMed: 8322813]
    46,XX,-18,+inv dup(18)(pter->q12.1::q22->q21::q12.1->qter).
    The patient had several dysmorphic features and was 12 years old.
    Aberration: Duplication
    Chromosomal Aneuploidy: 18q+
    Positive band
Copyright © 2011-2013, Digamber Borgaonkar.
Bookshelf ID: NBK106756

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