T8993G-F14

**Figure 1\. Pedigree diagram for family T8993G\-F14\.**

![](/media/202607/T8993G-F14-pedigree_20260701000705106828.png#size=100%&align=left)

# Pedigree Information

| **No.** | **Position** | **Variant** | **Family ID** | **Nationality** | **Diseases** | **Unaffected Maternal Relatives** | **Affected Maternal Relatives** | **Publication Year** | **PMID/Ref** | **Note** |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 8993 | m.8993T\>G | T8993G\-F14 | United States | Leigh syndrome | 2 | 0 | 1993 | [8250532](https://pubmed.ncbi.nlm.nih.gov/8250532/) | case \#9 |

The **m.8993T\>G** variant in MT\-ATP6 was reported in family T8993G\-F14 from United States with leigh syndrome. The pedigree record reported 2 unaffected and 0 affected maternal relatives, and the carrier table includes 4 listed carriers. Homoplasmy was reported in 0/4 listed carriers; 1/4 carriers were affected, and the main clinical manifestation among affected carriers was leigh syndrome, developmental delay, hypotonia, ataxia, seizures, respiratory impairment.

# Carrier Information

| **No.** | **Position** | **Variant** | **Family ID** | **Carrier ID** | **Type (Fam/De novo/Uninf)** | **Gender (F/M)** | **Proband (Y/N)** | **Affected (Y/N)** | **Die/Alive(D/A)** | **Age** | **Blood Mutant Level** | **Muscle Mutant level** | **Urine Mutant level** | **Other Mutant level** | **Clinical Features** | **Note** |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | 8993 | m.8993T\>G | T8993G\-F14 | T8993G\-F14\-II2 | Uninf | F | N | N | A | ND | 62% | / | / | / | Healthy |  |
| 2 | 8993 | m.8993T\>G | T8993G\-F14 | T8993G\-F14\-III1 | Fam | M | N | N | A | ND | 79% | / | / | / | Healthy |  |
| 3 | 8993 | m.8993T\>G | T8993G\-F14 | T8993G\-F14\-III2 | Fam | M | N | N | A | ND | 77% | / | / | / | Healthy |  |
| 4 | 8993 | m.8993T\>G | T8993G\-F14 | T8993G\-F14\-III3 | Fam | F | Y | Y | D | 5mo | / | 90% | / | / | Leigh syndrome; developmental delay; hypotonia; ataxia; seizures; respiratory impairment |  |

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